Description Antal Fiddle Block D40 Bush Head Stainless Steel Mini blocks, Fiddle block sheave Ø40 Technical Description Features American Metric Ø sheave (D) 1.57 in 40 mm SWL 1102.31 lb 500 kg Ø max line 0.31 in 8 mm Ø Small sheave 0.91 in 23 mm Side bearing - Delrin balls Sheave material - Resin Material - Stainless Steel Weight 0.20 lb 91 g