these chain markers are a simple yet handy system for marking the length of chain deployed

5mm engineered neoprene for movement and comfort

fiber-reinforced composite

75 oz Maximum line Ø (mm) 6 mm Maximum line Ø (in) 1/4 in Fasteners (mm) 5 RH mm Fasteners (in) #10 RH in Mounting hole spacing (mm) 52 mm Mounting hole spacing (in) 2 1/16 in Maximum working load (kg) 91 kg Maximum working load (lb) 200 lb Breaking load (kg) 544 kg Breaking load (lb) 1200 lb

Harken 57mm Cheek Ratchamatic® Block Thinners these chain markers are aThe Carbo Ratchamatic is a load sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. Shifting between ratchet and light air modes is seamless. Cheek: Line shedding, small mounting footprint and drain holes. Mounts on port or starboard. Sheave (mm) 57 mm Sheave (in) 2 1 4 in Length (mm) 83 mm Length (in) 3 1 4 in Weight (g) 89 g Weight (oz) 3. 1 oz Maximum line (mm) 10 mm