Description
Harken 57 mm Double Ratchet Block Swivel
Carbo ratchet blocks allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Machined aluminum sheaves are Hard Lube-anodized for strength and corrosion resistance. Eight facets hold line securely. Switchable ratchets provide precise control with an accessible on/off switch that is easy-to-operate from both sides of the block.
Technical Description
| Sheave Ø (mm) | 57 mm |
| Sheave Ø (in) | 2 1/4 in |
| Length (mm) | 116 mm |
| Length (in) | 4 9/16 in |
| Weight (g) | 195 g |
| Weight (oz) | 6.9 oz |
| Maximum line Ø (mm) | 10 mm |
| Maximum line Ø (in) | 3/8 in |
| Shackle pin Ø (mm) | 6 mm |
| Shackle pin Ø (in) | 1/4 in |
| Maximum working load (kg) | 340 kg |
| Maximum working load (lb) | 750 lb |
| Breaking load (lb) | 1875 lb |
| Breaking load (kg) | 851 kg |
| Holding power | 10:1 |
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