Advantages: 1. Wear-resistant and durable industrial-grade products 2. the surfacing router bit utilizes 4-sid solid carbide inserts, all 4 edges can be used. Can replace the carbide inserts when needed, instead of replacing the whole bit, is a more cost effective solution. Applied to: Suitable for soft and hard woods, MDF, laminate, particle board, plywood compact panel, acrylic and etc. Avoid cutting metal and non-wood materials; Use on CNC and other automatic routers as well as hand-held and table-mounted portable routers. Such as woodworking engraving machine, trimming machine, etc. The blade holder produced can only match our blades. the size is different from the blades on the market. Our specifications are based on the actual blade holder size. Material: alloy colour: black Package Contents: 1 x 4-blade T-shaped plate breaking knife with 1/2 handle 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.