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

Length 5 1/32" (128mm)

These drills are made from a special alloy of M42 steel containing 8% cobalt

Material: Glass

Doubles pump lift for Guzzler "400" series pumps

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)