Ronstan Ratchet Orbit Blocks, Series 40 - Single, Auto, Swivel Shackle Head 306744 Specifically designed to fit a

Specifically designed to fit a 1 Flat Drive Shaft with 8 rubber splines

Designed with a rugged nylon top and a polymide bowl

2 x 6mm csk mount holes

7 - front mount

Ronstan Ratchet Orbit Blocks, Series 40 - Single, Auto, Swivel Shackle Head 306744 Specifically designed to fit aFeatures: Up to 14: 1 holding power highest available! Smooth easing of sheets Fully Automatic load sensing ratchet engagement Swivel shackle head for unlimited block rotation. Stainless steel shackle head and compatibility with sharp fixing points Application: Dinghy mainsheet systems Mainsheet fine tune systems on sportsboats & small keel boats Mainsheet systems on sportsboats using RF7 mainsheet swivel cleat unit Spinnaker and job sheets on