ITEM NAME:12.7mm Shank T-Slot & T-Track Slotting Router Bit for Woodworking Chisel Cutter Descriptio n 100% brand new and high quality Materials: Body --SSIMd Hardened Steel Blade - Industrial grade micro grain car.T-type high-grade straight edge knife. 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.