This hand tap is made of high speed steel and has a 0.429 inch diameter, 1.9300 inch long shank. It is for use with steel, and meets the standards for USCTI Table 302, ANSI. This 5305L/5303L series hand tap has a bright (uncoated) finish, and has fractional inch measurements. It is non-coolant through, has left hand direction with a 3-19/32 inch length. Plus it has four flutes and a straight shank.