Swiss made. For the mechanic doing light machine shop work where millimeter thread sizes are required. Range from 1 to 6 mm. Consists of 14 dies, 3 each of 14 taps in sizes: 1.00, 1.20, 1.40, 1.70, 2.00, 2.30, 3.50, 4.00, 4.50, 5.50 and 6.00 mm, 3 tap holders and 3 die stocks. Packaged in wooden case. Bergeon Tap & Die Set for Mechanics