HARKEN 75mm Ratchamatic Flip-Flop SB Block, 2688 Product Type_Tiller Extension Joints The holding power of the

The holding power of the 57 mm is as high as 10:1

A high-strength precision cast pad eye minimizes the footprint

<p>Carbo Ratchets cheek blocks allow sailors to hand-hold loaded lines and offer a balance between holding power and controlled easing

The 442 uses a spacer and the 404 uses an O-ring to keep the line in the sheave during intermittent loading

Smooth surfaces and radiused center holes minimize line wear

HARKEN 75mm Ratchamatic Flip-Flop SB Block, 2688 Product Type_Tiller Extension Joints The holding power of theSmall Boat Flip Flop blocks pivot around the line axis to keep the line close to the deck. Hinged construction allows a variety of lead angles. Lightweight, machined 6061 T6 aluminum cheeks pivot on fiber reinforced plastic chocks. Sheave runs exclusively on a ball bearing system for fast trim and release under any load. Ball bearings, sheaves, and sideplates are UV stabilized with carbon black for maximum protection. Ratchamatic block versions roll