HARKEN 29mm Self-Contained Sheaves, 161 Material_Stainless Steel They develop their high strength

They develop their high strength and hardness through heat treatment

Designed for use with Harken Straphead blocks

Use Cruising ESP sheaves to handle high static loads from halyards and reef lines

It allows sailors to helm from an optimum position in the boat

making it suitable for high-load applications

HARKEN 29mm Self-Contained Sheaves, 161 Material_Stainless Steel They develop their high strengthSelf contained sheaves are designed for sailors to use in custom applications. The Micro, Bullet, and Big Bullet sheaves are Delrin with Delrin ball bearings. They are scored for rope. 16 mm sheaves are Delrin and feature stainless ball bearings that ride in a grooved race. Midrange sheaves come in either Delrin or aluminum for wire. Wire sheaves are Hard Lube anodized aluminum that rides on high load composite bearings. Ball bearings in the 38 mm (1