14-Pc HSS Countersink Bit Set (1/8,5/32,3/16,1/4,5/16,3/8,1/2) | Metal Drilling
The 60° angled tip ensures stability during drilling, preventing bit "walking" and improving precision in lathe work, milling, or bench drilling. Professional HSS Center Drill Set – 14 Sizes for Precision Machining （each size 2pcs）.