Cementex FX12-301/2 in. x 30 in Insulated Square Drive Fiberglass Extension BarFiberglass extension bar Tool complies with ASTM F1505 and IEC 60900 standards and helps meet requirements of OSHA 1910.331-335, NFPA 70E, and CSA-Z462 Tested to 10,000 VAC and Rated for 1,000 VAC when working on or around live parts Dimensions: 1/2 in. Square Drive x 30 in. L