Salisbury guarantees the mechanical parts of the tools for life provided they are used for the purpose in which they are intended. Insulation is guaranteed to be free from defects in material and workmanship for a period of two years from the date of the original shipment by S.I.P. (Salisbury Insulated Products) S.I.P. insulation is guaranteed to pass a 10,000 VAC proof test in accordance with applicable U.S. and International Standards and rated for application to 1000 VAC/1500 VDC. These tools meet or exceed ASTM 1505-07 and IEC Standards for insulated hand tools.