【SPECIFICATION】Solid Carbide down cut router bits with 1/4inch shank and 1/4inch cutting diameter, 1 inch cutting length, 2-1/2 inch for total length , can be used on routers with 1/4" collect 【DOWN CUT】Spiral CNC bits used for smoothly downcut groove and slots, Mortises, Cycles and dados leave with clean edge and top surface, better than straight bits 【DURABLE & PRECISE】SpeTool Downcut router bits are high-quality construction ensures durability and precision, allowing for consistent and accurate cuts 【COMPATIBILITY】This 1/4 router bit set is perfect for soft woods, hard woods, Plywood, laminate, OAK, MDF and any hardwood working. It can be used with cnc router and handheld router with 1/4" collet 【2 FLUTES】Spiral Bit Design allows for efficient chip removal, reducing heat buildup, better than straight bits