Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats of all sizes. Length (in) 2 in Sheave Ø (mm) 22 mm Sheave Ø (in) 7/8 in Length (mm) 51 mm Weight (g) 43 g Weight (oz) 1.5 oz Maximum line Ø (mm) 6 mm Maximum line Ø (in) 1/4 in Maximum working load (kg) 159 kg Maximum working load (lb) 350 lb Breaking load (kg) 544 kg Breaking load (lb) 1200 lb