ADJUSTABLE STRAPS FOR FINE ADJUSTMENTSAnd unlockable clip for easy hanging

The most popular base plate for the Optimist mast step

Side-zip for easy fitting and reinforced neoprene upper for hiking comfort

Outboard end for 32mm standard Optimist boom

Maximum working load (kg) 318 kg

Harken 57mm Double Block — Swivel 2602 Bottoms ADJUSTABLE STRAPS FOR FINE ADJUSTMENTSAndLow friction Carbo Air blocks are lightweight, strong, reliableand affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming. Part No. 2602 Sheave (mm) 57 mm Sheave (in) 2 1 4 in Maximum line (mm) 10 mm Maximum line (in) 3 8 in Maximum working load (kg) 720 kg Maximum working load (lb) 1584 lb