Ronstan Series 50 All Purpose Block, Double with Becket RF51210 PNP Blade edges hardened and hollow-ground

Blade edges hardened and hollow-ground for long lasting edge

and also to don them at the same time

Totally waterproof when cured

bike or public transport

Ronstan Series 50 All Purpose Block, Double with Becket RF51210 PNP Blade edges hardened and hollow-groundSeries 50 All Purpose Block, Double with Becket Double, becket, universal head FEATURES Exceptionally high working loads. Low maintenance, long service life. Self lubricating Acetal polymer sheave ensures low friction and extreme durability Slotted pin shackle eliminates fouled lines. Snap fit removable becket pin. Spare parts RF51010 Replacement Becket Pin, RF151 shackle Specifications Product Specifications Type of Block Double B. L. (kg) 2000 M. W.