Ronstan Series 25 Ball Bearing Becket and Swivel Shackle RF28100

Single sheave ball bearing block with becket hub and swivel shackle head

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. 225kg
Sheave diameter 25mm
B.L. 450kg
Weight 18g

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.