Why do top sailors pay attention to heel and trim angles

Strong Flat lock seams and inner reinforcement for extra strength

Fleece lined for warmth and comfort

Manual release bracket

Harken 29mm carbo 90-Degree Block 352 watch Why do top sailors payLow 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. Sheave (mm) 29 mm Sheave (in) 1 1 8 in Length (mm) 52 mm Length (in) 2 1 16 in Weight (g) 26 g Weight (oz) . 9 oz Maximum line (mm) 8 mm Maximum line (in) 5 16 in Maximum working load (kg) 150 kg Maximum working load (lb) 330 lb Breaking load