Hilka 45-piece tap and die set is a high-quality tungsten alloy steel set containing popular metric tap and dies with accessories to suit. Heat-treated and tempered for strength and durability. Tapered coarse and fine taps start easily and prevent over-threading. Dies are split to allow for fine adjustment of core diameter. Sizes M6-M24 packed in a metal case for safekeeping. Suitable for cleaning, cutting new or chasing lightly damaged internal and external threads. The set contains 20 taps, 20 split dies (adjustable), and two tap wrenches in small (M6 to M12) and large (M8 to M24). 2 x 2" diameter die stock with (1 1/2") adaptor. One screwdriver. Sizes: 1 1/2" Dies M6 x 1.0, M6 x 0.75, M8 x 1.0, M8 x 1.25, M10 x 1.25, M10 x 1.5, M12 x 1.5, M12 x 1.75, M14 x 1.5, M14 x 2.0, M16 x 1.5, M16 x 2.0, M18 x 1.5, M18 x 2.5. 2" inch dies M20 x 1.5, M20 x 2.5, M22 x 1.5, M22 x 2.5, M24 x 1.5, M24 x 3.0. Taps M6 x 1.0, M6 x 0.75, M8 x 1.0, M8 x 1.25, M10 x 1.25, M10 x 1.5, M12 x 1.5, M12 x 1.75, M14 x 1.5, M14 x 2.0, M16 x 1.5, M16 x 2.0, M18 x 1.5, M18 x 2.5, M20 x 1.5, M20 x 2.5, M22 x 1.5, M22 x 2.5, M24 x 1.5, M24 x 3.0.