Harken Big Bullet Double 223 hobie wave The stud that ball screws

The stud that ball screws onto measures 9/16" diameter

even if a fish hits

Part # 2004WHT

this one handles up to 3/16" diameter line with aluminum insert with teeth

Harken Big Bullet Double 223 hobie wave The stud that ball screwsLow friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets these blocks adapt to almost all control line applications. Delrin ball bearings, sheave, and sideplates are UV stabilized with carbon black for maximum protection. Wire Bullet blocks use roller bearings to carry higher loads and feature Hard Lube anodized aluminum sheaves for strength and