Hidden air vents in the pump prevent air locking in challenging plumbing installations and helps with the check valve operate

Breaking load (kg)1200

Regular fit

Hardwearing 16 plait Polyester cover

D-Splicer F-series needle for 4-6mm (5/32"-1/4") diam

Ronstan Series 50 All Purpose Block, Loop Top with Becket RF51111 fibreglass Hidden air vents in theAll 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. Becket pin is removeable so line can be spliced prior to fitting and is ingeniously locked into