Introducing the Allen 20mm Tie On Dynamic Block, specifically designed with a soft shackle to increase strength and reliability. Made with a stainless-steel loop at the head of the block to ensure proper orientation during use, this block also features a central rivet and patented bearing system for superior load-carrying ability. For maximum strength, be sure to properly attach the block using the correct method - feeding the rope around the central axle and through the head of the block. For further guidance, please contact us.