It is a End Mill/Milling Cutter/Double Edging Router Bits/CNC Tools. Material: High-speed steel, medium carbon steel, carbide-tipped. Application: This router bit are mainly used for plywood, hardwood, redwood, acrylic, medium density fiber, carbon fiber board and PVC etc., using plunge form bits for routing decorative details on the face side of raised pannels or solid wood paneling, or on the edge using a fence.