Ronstan Series 50 All Purpose Block, Double with Becket RF51210 DINGHY TOPS They install permanently on the

They install permanently on the boom and allow you to instantly attach and adjust your sail in high wind and waves

New Gel formula “sticks” where applied for maximum cling time and cleaning power

maximises power and endurance

this is combined with our custom designed rubber Non Slip-NonMarking™ outsole which has a unique water dispersion channel system that prevents aquaplaning and provides superior traction and durability in wet and dry conditions

With positional accuracy measured in centimeters

Ronstan Series 50 All Purpose Block, Double with Becket RF51210 DINGHY TOPS They install permanently on theSeries 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.