The 2021P is a plain bearing block with multifunctional head, ideal for use with shackles or clevis pins.

The A2021P is made using 100% recycled plastics and the well-known Allen Utra-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.