Feature: 1. MAIN USE: Cutting, 3D sag angle, slotting. The non backlash design of the architectural router bit is incisive and smoothly, suitable for trimming, 3D free angle, and slitting. 2. FINE WORKMANSHIP: Nano blue coating with heat resistance enables the cutting edge of the router bit to maintain crucial sharpness and lubricity. 3. EXCELLENT CUTTING: This router bit works with incisive cutting, smoothly rotation, fast operation, and strong hardness. 4. WIDE APPLICATION: This router bit is suitable for wood, MDF, particle board, plywood and other compact panels. 5. 5 SET: There are 5 set router bits in the package of different size that you can use them respectively to meet your different needs. Specification: Item Type: Architectural Router Bit Material: Tungsten Steel Alloy Product Specification: 1/4 x R1.5 (without bearings); 1/4 x R2 (without bearings); 1/4 x R2.5 (without bearings); 1/4 x R3 (without bearings); 1/4 x R4 (without bearings). Package List: 5 x Architectural Router Bit 5 x Plastic Box