Ratchet Blocks allow sailors to hand-hold loaded lines and offer a balance between holding power and controlled easing.
Machined aluminum sheaves are Hard Lube-anodized for strength and corrosion resistance. An eight-facet sheave holds the line securely with a 10:1 holding power, while certain Ratchamatic Blocks offer a 15:1 holding power.
Ball bearings, sheaves, and side plates are UV-stabilized with carbon black for maximum protection.
Ratchamatic® is a load-sensing ratchet block that rolls freely in low loads and automatically engages as loads increase. 1.5x Grip is for "breeze–on and puffy" conditions. It has a titanium-coloured sheave with 60 facets and a 15:1 holding power.
The Carbo Ratchamatic® is a load-sensing ratchet block with a 15:1 holding power that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase.
This switchable 75mm Ratchet block provides up to 15:1 holding power and provides precise on/off control with accessible, easy-to-operate switches on both sides of the block.
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CATEGORY: Harken Ratchet Blocks 
