ITEM NAME:12.7mm Shank T-Slot & T-Track Slotting Router Bit for Woodworkingl Cutter Description 100% brand new and high quality Materials: Body --SSIMd Hardened Steel Blade - Industrial grade micro grain car.YG6 alloy blade with high-grade welding, stable quality, high efficiency. The blade height: 12 mm(15/32"). Lower blade height: 8 mm(5/16"). We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted.