Allen 20mm Single Fork Head Block

Allen 20mm Single Fork Head Block is a compact and lightweight dynamic ball bearing block designed for sailing, marine and small-boat rigging applications. Its smooth, line-friendly contours and articulation help minimise friction and reduce line abrasion during use.

The block features stainless steel cheeks and an inner bearing system designed to handle high loads while maintaining smooth operation. A central hole allows for a tie-on becket, providing additional rigging flexibility.

With a 48mm overall length and compatibility with 2.5–6mm line, this compact Allen block is ideal for applications where low weight, reliable performance and efficient line handling are important.

Specifications:

• Allen 20mm Single Fork Head Block
• Block length: 48mm
• Suitable line diameter: 2.5–6mm
• Shackle pin: 4mm
• Breaking load: 350kg
• Stainless steel cheeks
• Dynamic ball bearing system
• Central hole for tie-on becket
• Suitable for sailing, marine and small-boat rigging applications