C3 micro-grain tungsten carbide blades, high quality alloy steel body with anti-kickback design;(Please receive the coupon code on the product page when purchasing to get a more favorable price. )Includes 6 sizes of 3 wing slot cutters, 8mm shank and 22mm(7/8" bearing); 6 sizes of slot cutters: 1.8mm, 2.5mm, 3mm, 4mm, 5mm, 6.35mm (1/16", 3/32", 1/8", 5/32", 3/16" and 1/4"); Cutting depth: 12.7mm(1/2"); Overall Length: 70mm(2-7/8"); You can use the cookie cutter, clevis and stick to create panel slots in stile and rail cabinet doors.Important: Cutters should be used one at a time. Stacking the knives without staggering the blades and adequate support between the bodies may bend and warp the bodies when tightening. Note: The data are all manual measurement, please allow an error of 1 - 3cm, due to the light and display difference, there will be some color difference, depending on the physical object received.