A useful all-round block which can be easily adapted and attached to variety of control systems on a boat.

Allen 20mm Dynamic Blocks feature the patented Allen Dynamic bearing system which provides an unrivalled weight to performance ratio. This is coupled with their high strength and rope friendly stainless steel ultra-strap; making them amongst the strongest and most reliable ballbearing blocks on the market. The range is available with different types of accessories including lacing eyes, hooks, swivels and cleats. The range also features a central rivet that provides great options as a tie on becket. You’ll find a 20mm block to suit most control line applications.

Features:

• Breaking Load: 350kg
• Length: 35mm
• Max Line Diameter: 6mm
• Max Working Load: 115kg
• Weight: 11.5g

Allen Cheek Adaptor for 30mm Multi-function Dynamic Bearing Block (A2031)

The A2020Ti3 has been developed by the Allen design team for the paragliding and kiting industries but is now being used in the marine sector. 

Featuring a wider opening at the top of the block and flatter sides when compared to the A2020Tii. This design results in a simpler block to thread rope around. The block still fits in the same footprint as the older A2020Tii and makes use of the same three sheave options which are tried and tested across the 20mm range. Utilising the Allen patented dynamic bearing technology of twin rows of stainless-steel balls running on a stainless rail.

Features:

• Breaking Load: 540kg
• Length: 29mm
• Maximum Line Diameter: 6mm
• Maximum Working Load: 115kg
• Weight: 8g

Allen 20mm Dynamic Blocks feature the patented Allen Dynamic bearing system which provides an unrivalled weight to performance ratio. This is coupled with their high strength and rope friendly stainless steel ultra-strap; making them amongst the strongest and most reliable ballbearing blocks on the market. The range is available with different types of accessories including lacing eyes, hooks, swivels and cleats. The range also features a central rivet that provides great options as a tie on becket. You’ll find a 20mm block to suit most control line applications.

Features:

• Breaking Load: 540kg
• Length: 37mm
• Max Line Diameter: 6mm
• Max Working Load: 115kg
• Weight: 10g

Allen 20mm Dynamic Blocks feature the patented Allen Dynamic bearing system which provides an unrivalled weight to performance ratio. This is coupled with their high strength and rope friendly stainless steel ultra-strap; making them amongst the strongest and most reliable ballbearing blocks on the market. The range is available with different types of accessories including lacing eyes, hooks, swivels and cleats. The range also features a central rivet that provides great options as a tie on becket. You’ll find a 20mm block to suit most control line applications.

Allen's Tii-On Blocks feature a stainless steel loop at the head of the block. Giving their range maximum strength and reliability with minimal cheek separation when tied on and loaded up with a soft shackle. The stainless steel head loop also ensures the block stays in the right orientation when being used.

Features:

• Breaking Load: 540kg
• Length: 29mm
• Max Line Diameter: 6mm
• Max Working Load: 115kg
• Weight: 8g
• Option: Soft shackle

Plain Blocks offer great static load bearing capabilities at a low weight and cost. The range features a variety of accessories to meet all your plain bearing needs on dinghies and keelboats.

Features:

• Breaking Load: 800kg
• Length: 40mm
• Max Line Diameter: 10mm
• Sheave Diameter: 38mm
• Weight: 70g

Allen Lightweight Plain Bearing Blocks feature 316 Stainless steel sides and a variety of sheave material options and sizes. They have been designed with cost in mind and provide a great solution to low movement applications that just need a simple yet attractive block.

Features:

• Breaking Load: 275kg
• Length: 16mm
• Line Diameter: 2-5mm
• Sheave Diameter: 16mm
• Weight: 7g

Allen Sheave Boxes are available with a plain bearing or ball bearing sheave. Extensive choice of sheave material to suit your application: Acetal Resin, Stainless Steel and Alloy. Sheave boxes are suitable for all types of halyard systems, control line systems and general running rigging. The low profile range of sheave boxes feature the unique hook-in cage; designed to deal with the high loads of modern rigs.

NOTE: Working and breaking loads are very dependent on the fixing of the sheave box.

Features:

• Breaking Load: 800kg
• Fixing Hole Centres: 65mm
• Fixing Hole Diameter: 4mm
• Maximum Working Load: 400kg
• Sheave Diameter: 38mm
• Sheave Material: Acetal
• Sheave Width: 8mm
• Slot Size: 52 x 15mm
• Weight: 34g

Allen Lightweight Plain Bearing Blocks feature 316 Stainless steel sides and a variety of sheave material options and sizes. They have been designed with cost in mind and provide a great solution to low movement applications that just need a simple yet attractive block.

Features:

• Breaking Load: 275kg
• Length: 38mm
• Line Diameter: 2-5mm
• Sheave Diameter: 16mm
• Weight: 15g

The A2026P is a plain bearing version of the Allen A2026 dynamic single cheek block. The A2026P is made using 100% recycled plastics and the well-known Allen Ultra-Strap. Ideal for use in elastic take up systems or applications where dynamic performance is not vital. This block looks very similar to the 20mm dynamic version. To differentiate Allen have changed the sheave colour to grey. Designed to replace the discontinued Allen 20mm Plain Bearing Cheek Block A4686-P.

Features:

• Breaking Load: 350kg
• Length: 45mm
• Max Line Diameter: 6mm
• Weight: 14.2g