1、STRONG AND DURABLE: An overall hardened steel body with anti backlash design. Heat resistant PTFE coating. Tungsten steel alloy tips can improve speed and extend service life, are durable, and undergo hardening and sharpening. 2、TUNGSTEN STEEL ALLOY MATERIAL: Made of premium tungsten steel alloy, durable, incisive and smoothly cutting, reducing the chance of burrs; Improve speed and longevity, durability, hardening and sharpening. 3、APPLICABLE MATERIALS: Suitable for solid wood, laminated board, MDF, plywood, etc. Create a very smoothly cut. Designed specifically for woodworking enthusiasts or carpenters. 4、EXACT USE: Enhance your hardwood working performances and create beautifully handmade furniture on your own. Great for kitchen and bathroom doors, office cabinets, flooring tables, bedroom shelves, and more. 5、5PCS: There are 5 pieces router bits in 5 size 8 x 1/8; 8 x 3/16; 8 x 1/4; 8 x 5/16; 8 x 3/8, in the package that are packed individually, easy to carry for convenient use.