This 45-piece Tap and Die Set from Neilsen is a heavy-duty collection designed for metric screw threading. The set includes a Tap Wrench (3-12.5mm), another Tap Wrench (6-25mm), a Die Stock (50mm), and a Screwdriver (3mm). It features a comprehensive range of taps and dies including sizes like 6 x 0.75, 6 x 1.0, 8 x 1.0, 8 x 1.25, 10 x 1.25, 10 x 1.5, 12 x 1.5, 12 x 1.75, 14 x 1.5, 14 x 2.0, 16 x 1.5, 16 x 2.0, 18 x 1.5, 18 x 2.5, 20 x 1.5, 20 x 2.5, 22 x 1.5, 22 x 2.5, 24 x 1.5, and 24 x 3.0. Additionally, it includes 1/2 inch O/D and 2 inch O/D die sizes. Constructed from Tungsten Steel for durability.