ITEM NAME:1/2" Hollow Square Mortiser Chisel Auger Drill Bit Tool Q6E5 1/2" Hollow Square Mortiser Chisel Auger Drill Bit Tool Q6E5 The square chisel mortiser combines the cutting of a four-sided chisel with the action of a drill bit in the center. The bit clears out most of the material to be removed, and the chisel ensures the edges are straight and clean. Hollow Mortising Chisel Bits are for making square mortises in one stroke and oblong mortises with each succeeding stroke. Product Name : Square Chisel Mortiser Material : Metal Chisel Side Length : 12.7mm / 1/2" Chisel Depth : 60mm / 2.36" Bit Shank Diameter : 8mm / 0.3" Bit Width (Bottom) : 12mm / 0.47" Flute Length : 90mm / 3.54" Drill Bit Total Length : 200mm/ 7.9" Shank Diameter(Max) : 19mm / 0.748" Color : As Picture Show Weight : 189g Package Content : 1 x Square Hollow Chisel Bit Mortiser Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm.