Ronstan RF20141 Stand-Up Ball Bearing Pulley 20mm – Series 20 BlockThe Ronstan RF20141 Stand Up Ball Bearing Pulley (20mm) is a compact, high performance Series 20 block designed for deck mounted control systems where alignment and efficiency are critical. Featuring a 20mm acetal sheave running on precision stainless steel ball bearings, this block delivers exceptionally low friction and smooth operation, making it ideal for frequently adjusted control lines such as vangs, travellers, and cunningham systems. The

Supplied by Barton Marine NZ – marine repair specialists

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hard-wearing white finish – gelcoat-style

Breaking Load 4410 lb

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Power Rib™ drum design improves grip and protects lines

Trailer boats & small launches

navigation rules

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Suitable for rope diameters from 6mm to 16mm

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