Extremely Accurate-Accurate within 4% of reading from 20% of full scale to full scale. Setting torque on adjustable wrenches is fast and easy because there is no spring tension on the adjustment knob. Torque setting locks on adjustable wrenches for repetitive applications. The wrench length is designed to provide the leverage required for maximum torque applications. The length also provides the needed reach for those-hard-to-get-at places. Plastic molded storage case, calibration certificate, and instructions included Square Drive: 3/4" drive, detachable ratchet Range: 200-600 lb. ft. Graduations: 10 lb. ft. Overall Length: 48-29/64" Effective Length: 44-31/32" Width: 2-3/8" Head Height (without square): 1-1/4" Weight: 11.76 lbs. (w/plastic case): 14.18 lbs. Finish: Nickel / Chrome Square Drive Service Kit: R44AR-RK Meets or Exceeds the following Specifications: GGG-W-686C, ANSI B107.14M