Suitable for use on live circuits up to 1000V AC or 1500V DC. 1/2"D x 45 teeth ratchet mechanism. Length: 250mm. Manufactured from chrome vanadium with a chrome molybdenum square drive. Fully insulated with a non-slip TPV soft grip handle. VDE/GS certified. IEC60900 approved for 1000V safe working. Other sizes available, Laser Part Nos. 8415 (1/4"D) and 8414 (3/8"D).