Harken 75mm Carbo Ratchet 75mm Cheek Block Shipping_Standard while the multiple D-ring attachment

while the multiple D-ring attachment points mean you can easily secure it down

As used on the GP14 class etc

Sheave 22 mm Length  64 mm Weight  43 g Maximum Line  6 mm Maximum Working Load  159 kg  Breaking Load  544 kg

It offers less friction than a deck bush

activity sailing

Harken 75mm Carbo Ratchet 75mm Cheek Block Shipping_Standard while the multiple D-ring attachmentCarbo Ratchets allow sailors to hand hold loaded lines and offer balance between holding power and controlled easing. Sheave 75 mm Length 103 mm Weight 179 g Fasteners M5 mm Maximum Line 12 mm Maximum Working Load 341 kg Breaking Load 1361kg Holding Power 15: 1