Harken 57 mm Triple Ratchet Block -
Swivel, Cam Cleat
allow sailors to hand-hold loaded lines and offer balance between
holding power and controlled easing.Nylon resin sideplates are densely
packed with long-glass fibers for a compact block with a high
strength-to-weight ratio. Machined aluminum sheaves are Hardkote
anodized for strength and corrosion resistance.
Eight facets hold line securely.
Ball bearings, sheave and sideplates are
UV-stabilized with carbon black for maximum protection.
The 57mm switchable ratchets provide precise
on/off control with accessible, easy-to-operate on/off switches on both
sides of the block.
Sheave: 57 mm
Length: 103 mm
Weight*: 435 g
Shackle pin dia.: 6 mm
Max line 10 mm
Max working load: 680 kg
Breaking load: 1700 kg
* Weight with shackle
**Includes RH fasteners and mounting pad.
***Maximum working loads and breaking loads
for blocks based on cam strengths.