Item Type: Router Bit Material: Carbon Steel Main Body + Alloy Cutter Head Shank Diameter: 1/4in Cutter Head Diameter: 3/4in, 7/8in, 1in, 1-1/8in Package List 4 x Router Bit 4 x Storage Box 14Pcs in 1 Set: There are 4pcs router bit in different sizes, corresponding to your various processing needs. 2For Trimming: Creates smooth round edges on plates and panels, which hardly needs to be sanded before painting. 3Wide Utility: Suits for cutting plywood, hardwood, softwood and so on, but not for metal and non wood materials. 4Easy to Carry: With compact size and light weight, the carrying is very convenient, ideal for home DIY as well. 5Edge Diameter: The edge diameter of the polished wood board is 1/8in, 1/4in, 3/16in and 5/16in, very practical.