General description This countersink set is made of high-speed steel, ensuring high hardness and a long service life. It includes 5 pieces of countersink drill bits in various diameters and foot shapes to meet different needs. The five-blade design effectively removes sawdust quickly and without snags. The 82° countersink drill bit is particularly suitable for drilling, rounding, and countersinking. Technical specifications Material: High-speed steel Number of pieces: 5 Blade design: 5-blade Countersink angle: 82° Usage The countersink drill bit is suitable for drilling holes in low hardness materials and thin edges, including: Aluminum sheets Wood panels PVC insulation boards Plates