Ronstan Series 50 Single Loop Head Block Windlasses Length 5 1/32" (128mm)

Length 5 1/32" (128mm)

slippery surface

TEF 45 seals out water and electrolytes from entering the small gaps around fasteners and between metals

This version of the nylon RailFast is made without the laydown handle

permanently flexible

Ronstan Series 50 Single Loop Head Block Windlasses Length 5 1/32" (128mm)All purpose (AP) blocks are a great all around solution. Self lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. ApplicationsMainsheet and halyard applications, vang and spinnaker control lines on boats to 10m (33ft)