Allen 20mm Linked Single Dynamic Blocks

The Allen A2029 Linked Singles are a pair of 20 mm dynamic single blocks linked together, designed for low-friction control-line systems on dinghies, windsurfers, kitesurfing equipment and other applications using smaller-diameter lines. They use Allen's patented dynamic bearing system with twin rows of stainless-steel ball bearings for smooth running, high load capacity and long service life.

The Allen A2029 Linked Singles provide two 20 mm single blocks in a compact linked arrangement, making them ideal for building efficient purchase and control-line systems where space and weight are important.

Each block uses Allen's patented Dynamic bearing system, with twin rows of stainless-steel ball bearings running on a stainless-steel rail. This gives the blocks smooth, fast rolling performance while providing strong load-carrying ability and durability under constant sheave movement.

The 20 mm blocks are particularly suited to small-diameter control lines, making the A2029 a useful choice for dinghy sailing and other high-performance applications where low friction and compact hardware are important.

The blocks also feature Allen's large central rivet, which reduces weight while providing a rope-friendly attachment point. This can be particularly useful as a tie-off point when building a cascade purchase system.

The A2029 accepts lines up to 6 mm, has a 540 kg breaking load, measures 70 mm long and weighs 21.8 g.

Key Features:

• Allen A2029
• Linked 20 mm single dynamic blocks
• Low-friction, fast-rolling design
• Allen patented Dynamic bearing system
• Twin rows of stainless-steel ball bearings
• Stainless-steel bearing rail
• Large central rivet provides a rope-friendly tie-off point
• Ideal for cascade purchase systems
• Suitable for smaller-diameter control lines
• Maximum line diameter: 6 mm
• Breaking load: 540 kg
• Length: 70 mm
• Weight: 21.8 g
• Suitable for dinghies, windsurfing, kitesurfing and other performance applications

All delivery and returns information can be found here >>

Delivery Information.