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