Description Antal 34mm Single Upright Over The Top Block Technical Description Features Metric American Length (L) 1.89 in 48 mm Width (W) 0.63 in 16 mm Height (H) 2.01 in 51 mm Ø sheave (D) 1.34 in 34 mm Side bearing - Delrin balls Weight 0.143 lb 65 g Ø max line 0.24 in 6 mm A 0.31 in 8 mm SWL 882 lb 400 kg Material - S. Steel Sheave material - Resin Fixing screws 0.08 × Ø0.20 in 2 x Ø5 mm