26 (from a - z), 1 symbol "&" and 9 numbers (0 - 9, use the 6 as a 9). 2.36Inch (60mm) total length, letters height: 1/8Inch(3mm), stamped impression depth about 1.0mm to 1.1mm. Made of high-frequency heat treatment Chrome Vanadium Steel, to use. It can be used to stamp soft metals, including aluminum, tin, copper, brass, nickel silver, and wood; stainless steel is not suitable. Packed in a plastic storage box for letters and numbers, to help you keep the item organized and easier to carry. Lower Case Letter stamps: a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, x, y, z Character stamp: & Number stamps: 0, 1, 2, 3, 4, 5, 6/9, 7, 8 It is made of Chrome Vanadium Steel with high hardness and good wear resistance, and it is to use. Includes plastic storage case for easy storage and carrying. Letter Size: 3mm(1/8Inch) Letter Depth: ()1.0mm - 1.1mm Size of Each Punch: 60mm x 6mm/2.36 inches x 0.24 inches (LxW) Colour:Random Color(Color is random, no specification is accepted) Material:Chrome vanadium steel Package Contents: 1 * number punch set for metal(Box color is random, no specification is accepted) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.