The Tii design incorporates a special stainless steel insert in the head which improves the stability and durability of the blocks.

Allen 20mm Dynamic Blocks feature the patented Allen Dynamic bearing system which provides an unrivalled weight to performance ratio. 

Length: 42mm

1. Line Diameter: 5-7mm

2. Breaking Load kg: 750kg

3. Maximum Working Load: 140kg

4. Weight: 24g