3Pcs/6pcs HSS Chamfer Countersink Chamfer Drill Bit Set 1/4" Hex Shank 90 Degree Wood Chamfering Cutter 6mm-19mm feature: brand new and high quality. Five-slot chamfer deburring countersink 1/4" hexagon. Ideal for chamfering, deburring and countersinking. The five-blade design provides a small chip load and faster removal. High-speed steel structure. 1/4" hex handle. 90 degree chamfer. Shank size: 1/4 6.35mm hexagonal handle. Prompt degree: 90. Model52A32D39X062114 Material: high-speed steel. Length: 48mm Item type: countersunk hole. Flute: Five Flute Applicable materials: wood, plastic, aluminum, etc. Package Included: 3PCS A: 6mm+8mm+9mm 3PCS B: 12mm+16mm+19mm 6PCS: 6mm+8mm+9mm+12mm+16mm+19mm notes: 1. Manual measurement, please allow 1~2mm error, thank you. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the item. Please allow a little color difference.