No.3 mechanic vice 100mm 4in irwin 6, irwinreg recordreg mechanic's vice is rigid and robust'. '.strtoupper('t')he body and sliding jaw are cast from close grained grey iron which is machined on all friction surfaces for a smooth, reliable action'. '.strtoupper('f')itted with hardened steel jaws for extended life, they can be replaced when worn'. '.strtoupper('t')he main steel screw has a two start rolled acme thread for faster and smoother operation'. '.strtoupper('i')t has a fused steel handle that will bend before the vice can be overstressed'. '.strtoupper('a') safety stop prevents the slide from being separated from the body'. '.strtoupper('t')he most popular and widely used general purpose vice for light to medium duty applications'. '.strtoupper('a') full line of replacement parts are available.the irwinreg recordreg no.6 mechanic's vice has the following specification jaw width 150mm 6in'. '.strtoupper('i')rwin® record® 6 no.6 mechanic's vice 150mm 6in