Features: brand new and high quality. Bits are designed to cut at the correct angle providing for extra gluing surface and a strong mechanical joint. When glued together, the Routed end hugs the mating piece preventing any slippage. Choose the desired bit and cut according to the amount of sides needed for your project. Cut face up for six or eight sided projects and face down for twelve or sixteen sided projects. Edges can be cut either flush or protruded, then sanded down later to the desired finish. Multi-sided glue joint bits make joining up multi-sided projects easy. Using these bits, you will only need to cut one end as opposed to two (such as with miter joints) reducing cutting for time in half! Specifications: Material: Cutter Head: YG6 Alloy Cutter Body: 45# Carbon Steel Size: As the Picture Show Package Includes: 3x/Set 1/2" Shank Bird's Mouth Router Bit Set note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.