Description Antal 40mm Single Upright Block Technical Description Features Metric American Length (L) 2.48 in 63 mm Width (W) 0.71 in 18 mm Height (H) 2.17 in 55 mm Ø sheave (D) 1.57 in 40 mm Side bearing - Delrin balls Weight 0.170 lb 77 g Ø max line 0.31 in 8 mm SWL 1.102 lb 500 kg Material - S.Steel Sheave material - Resin Fixing screws 0.08 × 0.24 in 2 x Ø6 mm