SZ-1B Hand Held cold welder No need of heat ... no heat-affected zone with unsuitable properties This light-weight, hand-held unit is ideal for use in tight spaces. ... single or double cavity. Carrying case included. Model Hand Clamp SZ-1B Cold Welding Machine Application Widely ... Advantage No power, no change of the resistance, clean, light, thin deposit, easy of operation , portability Overall dimensions ...