100 mm Plain Bearing Block - Halyard, permanent backstay Self-Tacking Mounting: 1x M4

Mounting: 1x M4

making this block ideal for sheets and control lines

Comment: Hole spacing 50mm

The PBB40 Single Swivel Block is a 40mm plain bearing block with a swiveling shaft

The 70 mm Plain Bearing Block - Double is ideal for heavy and static loads on larger boats

100 mm Plain Bearing Block - Halyard, permanent backstay Self-Tacking Mounting: 1x M4The 100mm Plain Bearing Single Backstay Block is designed for up to 4 ton working load and ideal for backstays (permanent backstays) as the top block in a cascade system. The block features a plain bearing with polymer bushing and two axial Delrin thrust bearings to stabilize the sheave when the rope enters or exits the block with an angle. Machined, black anodised aluminium sheave and cheeks. All stainless parts are insulated from aluminium to