supply of 1/2 inch sq. drive ratcheting head , 1/2 inch sq. drive ratcheting head, max. recommended working torque: 240 ft.-lbs with 1 70 nm preset torque value made in single piece aluminium alloy body preset click type, interchangeable head permit ratcheting accuracy: plus/minus 4% (clockwise), plus/minus 6% (counter-clockwise) from 20 % to 100% of full scale with two sockets of size 24 mm maximum weight: 2.5 kg. note: calibration certif icate to be provided by nabl accredited lab or oem. certificate of genuineness to be furnished at the ti me of supply by oem/authorised dealer. make: snapon or armstrong or samtool or gedore or simil ar. [ warranty period: 12 months after the date of delivery ] ]