20 mm Ball bearing Block - Triple PBB16 It features a stainless steel

It features a stainless steel strap for safety and longevity and glass fiber reinforced composite cheeks to prevent jamming

A solid track with no holes for installation

The 60 mm Single Cheek Plain Bearing Block with Quick-Lock is designed to lead a line to a winch and allow for the line to be temporarily locked with a spring-loaded locking arm

Mounting: 3xM10

20 mm Ball bearing Block - Triple PBB16 It features a stainless steelThe Seldn BBB20 Triple Ball Bearing Block is designed for control lines on dinghies and keelboats. Made with stainless steel ball bearings and glass fiber reinforced polyamide, it offers high strength and low friction. Can be attached with shackle or line. Ideal for 420 rig tension systems. Safe working Load: 300 kg Breaking Load: 600 kg Max line size: 6 mm