Check the listing for details. 60mm Double Swivel Shackle Block - Master BP-0603F. Condition: Brand New. Listed at 47.15 USD. Product Specifications 60mm Double Swivel Shackle Block - Master BP-0603F Sheave Ø (mm)60 mmSheave Ø (in)2 1/3 inMaximum line Ø (mm)12 mmMaximum line Ø (in)1/2 inMWL / BL (kg)600 / 1200 kgMWL / BL (lb)1322 / 2646 lb Product range - Plain Bearing Blocks Master plain bearing blocks are available in 35mm, 50mm, 60mm, 72mm and 90mm sizes and multiple configurations. The range features: self-lubricating Acetel bushing for smooth rotation and high static loads, high strength side plates made from a UV stabilised stiff glass-fibre reinforced Nylon composite for lightness,locking mechanism so that the shackle in the “single swivel shackle” models can either rotate freely or be locked in position (only from 50mm), becket pin which is easy to remove or lock into the keyhole with no tools, adjustable cam cleat arms for an optimal exit angle of sheets.