Features: All metal construction for the toughest, most demanding industrial applications Chrome Molybdenum ratchet pawls and teeth heat treated for maximum durability and high torque loads Quick release ratchet head holds sockets and accessories safely and securely Accurate to +/-3% clockwise and +/-6% counterclockwise German-made spring is precompressed 1200 times before installation to ensure spring does not change tension over time Life cycle tested to 12,000 cycles and 130% of rated capacity Hardened steel tube for long life and improved accuracy Knurled aluminum handle for safe, slip-resistant grip Extra dark scale and adjustment ring printing for improved visibility Dual scales for use on imperial or metric components All units calibrated in both directions and shipped complete with factory calibration certificate Complete with heavy-duty blow mould case Specifications: Product # Drive Length Number of Teeth Product Weight Torque Range 718971 1/4" 9-3/4" 64 0.75 lb (0.34 kg) 50 - 250 in-lb (6.8 - 27.1 Nm) 718973 3/8" 17" 32 2.24 lb (1.02 kg) 20 - 100 ft-lb (33.9 - 128.8 Nm) 718976 1/2" 24" 32 3.6 lb (1.65 kg) 50 - 250 ft-lb (75 - 332 Nm) 718977 3/4" 48-7/8" 24 11.7 lb (5.3 kg) 150 - 600 ft-lb (237 - 779 Nm) 718980 1" 72-7/8" 24 23.4 lb (10.6 kg) 200 - 1,000 ft-lb (305 - 1,322 Nm) * All Pictures Shown Are For Illustration Purpose Only. Actual Product May Vary Due To Product Enhancement.