Single Stringing Blocks for Sale

Custom Truck One Source sells single blocks for conductor wire stringing. Our single blocks provide the reliable tension control you need for high-demand wire installation projects, and we can even customize single blocks to meet the most specific wire distribution applications. Incorporating these blocks into your wire stringing system will increase its mechanical advantage so you can lift more weight with less effort. Browse our selection to find a product that fits your rig and includes the features you need for the job.

Types of Single Blocks

Choosing the right single block for your stringing system will ensure you experience the full benefits of the tension control it provides. At Custom Truck One Source, we carry numerous types of single blocks that are ready to rise to your job’s demands. These blocks feature reliable materials like aluminum and urethane that withstand heavy use while preventing wire damage due to friction.

Browse our selection to find single blocks compatible with your specific type of stringing system or others that offer the versatility to change between rigging installations.

  • Full-frame blocks
  • Helicopter blocks
  • Universal blocks

Financing for Single Blocks

At Custom Truck One Source, we’re passionate about connecting fleet managers with the equipment they need to optimize productivity. When you shop with us, you can take advantage of our flexible equipment financing options. We offer up to 100% financing with fixed monthly payments so you can outfit your fleet while retaining enough funds to grow your business. We’ll even work with you to develop the ideal borrowing parameters so you can manage cash flow and maximize your tax benefits.

One Source for Your Fleet

Custom Truck One Source goes above and beyond to offer everything your rigging fleet needs. In addition to our single blocks for pulley systems, we also offer a wide range of block accessories that optimize your equipment for the application.

Our capabilities run deeper than block and block accessory sales. Work with Custom Truck One Source to purchase vehicles for your fleet, benefit from our maintenance services, and eventually sell or dispose of unneeded assets in the way that benefits you the most. We also offer rentals for fleet owners who prioritize flexibility. We’re proud to be a single source for hardworking fleet managers, so trust Custom Truck One Source for your every need.

24/7 Support

Having trouble with your single blocks? Custom Truck One Source can help. We’re available around the clock to help you troubleshoot issues over the phone. To help ensure a quick resolution and minimize downtime, you’ll get to speak with an expert mechanic as soon as we answer your call — not a salesperson or automated messaging system. If you need further support, we’ll send a technician to your facility as soon as possible so you can get back to work.

Browse Custom Truck Single Blocks

Custom Truck One Source has the single blocks you need to prepare your fleet for large conductor stringing. Browse our full-frame, helicopter and universal blocks to find the ideal choice for your application, then request a quote to receive a precise cost estimation. For more information on our single blocks and customization options, contact us online today!

BTTV31-AL-14-8

CTOS BTTV-31 Aluminum Helicopter Block 16" to 28" Diameter Sheave
Equipment Cat-Class bttv31-al-14-8
Your Price:
REQUEST
  • Polished aluminum sheave
  • Sheave diameters between 16-28"
  • Large contoured throat
  • Part Number(s): BTTV-31-AL-14-8, BTTV-31-AL-16-12, BTTV-31-AL-18-12, BTTV-31-AL-24-12, BTTV-31-AL-28-15, BTTV-31-AL-30-15,

BTTV31-UL-10-8

CTOS BTTV-31 Urethane Lined Helicopter Block 10" to 46" Diameter Sheave
Equipment Cat-Class bttv31-ul-10-8
Your Price:
REQUEST
  • Utherane Lined Sheave
  • Sheave Diameters between 10-46"
  • Large contoured throat
  • Part Number(s): BTTV-31-UL-8-5, BTTV-31-UL-10-8, BTTV-31-UL-14-8, BTTV-31-UL-16-12, BTTV-31-UL-18-12, BTTV-31-UL-24-12, BTTV-31-UL-28-15, BTTV-31-UL-30-15, BTTV-31-UL-34-15, BTTV-31-UL-36-15, BTTV-31-UL-40-15

BTTV31-UL108BG

CTOS BTTV-31 Urethane Lined Helicopter Block 12" to 46" Diameter Sheave & Grounding Arm
Equipment Cat-Class bttv31-ul108bg
Your Price:
REQUEST
  • Utherane Lined Sheave
  • Sheave Diameters between 12-46"
  • With Grounding Arm
  • Part Number(s): BTTV31-UL108BG, BTTV31-UL-148G, BTTV31UL1612BG, BTTV31UL2412BG, BTTV31UL2815BG, BTTV31UL3015BG, BTTV31-UL3615G, BTTV31-UL4015G

BTTV31UL1812WG

CTOS BTTV-31 Urethane Lined Helicopter Block w/ 22" Diameter Sheave & Grounding Arm
Equipment Cat-Class bttv31ul1812wg
Your Price:
REQUEST
  • Urethane Lined Sheave
  • Helicopter Block
  • 22" Sheave
  • With Grounding Arm
  • Part Number(s): BTTV31UL1812WG

BTTV31-UL-1812

CTOS BTTV-31 Urethane Lined Helicopter Block w/ 22" Sheave & Wide Throat
Equipment Cat-Class bttv31-ul-1812
Your Price:
REQUEST
  • Urethane Lined Sheave
  • Helicopter Block
  • 22" Sheave
  • Wide Throat
  • Part Number(s): BTTV31-UL-1812

BTV11-UL-14-9

CTOS BTV-11 Full Frame Blocks, 16" to 42" Urethane Sheaves
Equipment Cat-Class btv11-ul-14-9
Your Price:
REQUEST
  • Latch: Detention Pin
  • Sheave OD: 16”- 42"
  • Sheave Material: Urethane Lined
  • Part Number(s): BTV11-UL-14-9, BTV11-UL-16-12, BTV11-UL-18-12, BTV11-UL-24-12, BTV11-UL-28-15, BTV11-UL-30-15, BTV11-UL-34-15, BTV11-UL-36-15, BTV11-UL-40-15

BTV11-AL-1812

CTOS BTV-11 Full Frame Blocks, 22" to 28" Aluminum Sheaves
Equipment Cat-Class btv11-al-1812
Your Price:
REQUEST
  • CTOS BTV-11 Full Frame Blocks, 22" to 28" Aluminum Sheaves
  • Part Number(s): BTV11-AL-1812, BTV11-AL-2412

BTV11-UL-14-9G

CTOS BTV-11-BG Full Frame Block with Detention Pin and Grounding Arm 16" to 42" Urethane Sheaves
Equipment Cat-Class btv11-ul-14-9g
Your Price:
REQUEST
  • Urethane Lined Sheave
  • Latch: Detention Pin
  • Sheave OD: 16”- 42
  • With Grounding Arm
  • Part Number(s): BTV11-UL-14-9BG, BTV11-UL-16-12BG, BTV11-UL-18-12BG, BTV11-UL-24-12BG, BTV11-UL-28-15BG, BTV11-UL-30-15BG, BTV11-UL-34-15BG, BTV11-UL-36-15BG

JIB-45

CTOS Jib Roller with Locking Detention Pin JIB-45
Equipment Cat-Class jib-45
Your Price:
REQUEST
  • Rope Size: 1”
  • SWL: 2,500 LBS
  • Part Number(s): JIB-45

UB-1-B

CTOS Universal Block w/ Twist Latch, 7" Sheave
Equipment Cat-Class ub-1-b
Your Price:
REQUEST
  • Twist latch
  • 7" sheave
  • Weight: 9.1 lbs.
  • Available in polished aluminum, ductile iron, or urethane lined

UB-1-C

CTOS Universal Block with Detention Pin SWL 2500 LBS
Equipment Cat-Class ub-1-c
Your Price:
REQUEST
  • Latch: Detention Pin
  • Sheave Material: Polished Aluminum, Ductile Iron, Urethane Lined
  • Sheave OD: 7”
  • Sheaves Available: Polished Aluminum, Ductile Iron, and Urethane Lined
  • Part Number(s): UB-1-C

UB-1-A-G

CTOS Universal Block with Spring-Loaded Latch and Grounding Stud 7" Aluminum Sheave
Equipment Cat-Class ub-1-a-g
Your Price:
REQUEST
  • Latch: Spring-Loaded Gate
  • Grounded Stud
  • Sheave Material: Polished Aluminum
  • Sheave OD: 7”
  • Part Number(s): UB-1-A-G

UB-1-A

CTOS Universal Block with Spring-Loaded Latch, 7" Sheave, Polished Aluminum
Equipment Cat-Class ub-1-a
Your Price:
REQUEST
  • Available with Polished Aluminum Sheave, Ductiles Iron Sheave, and Urethane Lined Sheave
  • Latch: Spring-Loaded Gate
  • Sheave Material: Polished Aluminum, Ductile Iron, Urethane Lined
  • Sheave OD: 7”
  • Part Number(s): UB-1-A