A2021 - 20mm Dynamic Block: Single with Multi-Function head
Allen 20mm Dynamic Multi Function Block has a slightly different strap compared to the A2020.
The multi function head is designed to attach the Allen swivel, fork and cheek adaptors to. It is also used for riveting to the double and triple ultra-straps
Specification:
Max Line Diameter: 6mm
Breaking Load: 350kg
Safe Working Load: 115kg
Weight: 11.5g