Schaefer 37 mm Hinged Fairlead Block, 300-32 Sailboat Blocks & Hardware_40 mm Utility Cheek Block The medium sheave diameter works

The medium sheave diameter works well with lines up to 3/8"

directly to a mast using the centerline holes and the Mast Bracket Hardware Kit

It requires no headstay modifications

All ultra ends require a minimum of 1

Schaefer 37 mm Hinged Fairlead Block, 300-32 Sailboat Blocks & Hardware_40 mm Utility Cheek Block The medium sheave diameter works300 32 hinged fairlead block has an extremely low profile which keeps control lines and halyards close to the deck. Delrin ball bearing sheaves provide low friction with high strength. Stainless steel base includes SS pin easily removable for installation. The block will swivel 180 degrees. Extremely low profile keeps control lines and halyards close to the deck. Open Delrin ball bearing race design guarantees low friction and easy maintenance.