Thin Wall Diamond Core Drills, Multi Layer Electroplated with straight shank

100DE SMART CUT series Thin Wall Multi-Layered Electroplated Diamond Core Drills, Manufactured by UKAM Industrial are Multi Layered. They have 3 layers of diamonds, not just 1 layer of diamonds like conventional electroplated drills. This provides longer drilling life, smoother surface finish, faster and freer  drilling action, & more consistent performance.