Specifications: Plug taps are suitable for cleaning & re-threading mild steel and aluminum materials. This set is not supplied with any taper taps for threading new holes. Come with a plastic storage box. Type: Tap and Die Set Material: Alloy Steel Quantity: 20 Pcs/Box Adjustable Tap Wrench: 1/8"- 1/2"(3mm-12mm) Tap and Die Size: M3 x 0.5, Length: 52mm/2.05" (Approx.) M4 x 0.7, Length: 54mm/2.13" (Approx.) M5 x 0.8, Length: 63mm/2.48" (Approx.) M6 x 1.0, Length: 65mm/2.56" (Approx.) M7 x 1.0, Length: 65mm/2.56" (Approx.) M8 x 1.25, Length: 70mm/2.76" (Approx.) M9 x 1.2, Length: 70mm/2.76" (Approx.) M10 x 1.50, Length: 75mm/2.95" (Approx.) M12 x 1.75, Length: 80mm/3.15" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 9 x Hand Taps 9 x Hand Dies 1 x Bar Type Tap Wrench 1 x Die Holder 1 x Storage Box