Ronstan Series 25 Ball Bearing Becket Lash on RF28109

Single sheave ball bearing block with becket hub - Lash on Series 25 Ball Bearing Orbit Blocks™, delivering superior strength, reduced weight, and exceptional performance for high-demand dinghy and small boat applications. 2-stage ball bearing system, Suits up to 8mm lines. Hollow hub for becket take-off. M.W.L. 250kg Sheave diameter 25mm B.L. 750kg Weight 14g Mainsheet and spinnaker sheet turning blocks on dinghies to 4m (13ft). Control lines. Cascading vangs. Leech lines & cunninghams. Frame/cheeks: Toughened, glass fibre reinforced nylon. BB Sheave and balls: high compression strength acetal.