Harken Midrange Single w/Aluminum Sheave Block [1542] E-Bikes Fabric Blend: 60% cotton /

Fabric Blend: 60% cotton / 40% polyester

Dave has made his Blue Box" nearly indestructible so it will last for years of hard use

The ceramic arrays are tilted inside the housing giving you the perfect vertical beam with maximum energy on what is directly below your boat

Mounts above or below the trailer frame

Harken Midrange Single w/Aluminum Sheave Block [1542] E-Bikes Fabric Blend: 60% cotton /Midrange Single with Aluminum Sheave Block Midrange blocks robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on a ball bearing system for fast trim and release under any load. Features: Sheave: 76mm 3" Maximum Line: 14mm 9 16" Max Working Load: 1270kg 2800lbs