Allen 20mm Single Multi Function Block Apparel & Personal Gear This provides a superior load-carrying

This provides a superior load-carrying ability and longevity when compared to other bearing systems which run on a plastic rail

as it keeps the line load pulling the side cheeks together

Allen 30mm Back To Back Block

Allen 30mm Single Dynamic Block

Allen 20mm Double Dynamic Tii-On Block

Allen 20mm Single Multi Function Block Apparel & Personal Gear This provides a superior load-carryingAllen 20mm Single Multi Function Block The multi function block has a slightly different strap compared to the A2020. The A2021 multi function block is the base block used in the following variations: A2021F, A2021HK, A2021SC and all double and triple variations. The multi function head is designed to attach our swivel, fork and cheek adaptors to. It is also used for riveting to the double and triple ultra straps. Bearings Dynamic Blocks feature our