【Size】 The metric size of this tap is from M1 to M3.5 (M1 M1.2 M1.4 M1.6 M1.7 M1.8 M2 M2.5 M3 M3.5). You could see the marker on corresponding shank
【Material】 Taps are made of high speed steel. Wear resistant, heat resistant, durable, ensure to last longer
【Structure】 Straight flute coarse thread design. Standard thread distance, clear and tidy, no burr. It can be used for making both internal and external threads on small parts
【Application】 Metric Tap used in Jewelry making and Watch repair made to be used with soft precious metals (For use with Gold, Silver, Copper and Brass)
【Maintenance】 Always use a cutting fluid when using the Taps, turn a few threads and reverse slightly to remove the metals that have been cut