Japanese (JIS) cross-point head. Sizes: PH1 x 75mm, PH2 x 100mm, PH3 x 150mm. Pound thru design can be struck with a hammer to release the fixing before and during application of torque. Hex shaft continues through handle for strength & impact resistance. Manufactured from chrome molybdenum with magnetic tips. From a range of JIS tools. Please see Part Nos. 7036 (screwdriver set), 7520 (T-handle bit), 7724 (Impact bit set).