This range of classic blocks offers excellent static load-bearing capabilities at a low weight and cost. With a variety of accessories available, these blocks can fulfill all your plain bearing needs when used on classic dinghies. The A4250PF single plain bearing reinforced block with clevis pin features a sheave diameter of 20mm, a length of 43mm, a maximum line diameter of 6mm, a breaking load of 350kg, and a weight of 13.5g