Drill America 5 Piece Single Flute Countersink Set, Sizes: 1/4, 3/8, 1/2, 5/8 and 3/4, 82 Degrees

Includes 1/4", 3/8", 1/2", 5/8", and 3/4" sizes, this 5-piece High Speed Steel (HSS) Single Flute Countersink Set is optimized for clean, controlled cuts with minimal vibration—especially in soft materials like plastic and aluminum. Featuring an 82° cutting angle and a single flute design, these countersinks provide excellent chip clearance and are less likely to chatter at lower speeds. Ideal for use with hand drills and lower-powered machines, this set delivers smooth, professional results whether you’re deburring, chamfering, or prepping holes for flathead screws.

• Includes 5 Sizes: 1/4", 3/8", 1/2", 5/8", and 3/4" single flute countersinks with 82° cutting angle - ideal for creating clean, precise countersinks for flathead screws
• Excellent Chip Clearance: Single flute design prevents clogging, ideal for plastic and aluminum
• Low-Speed Friendly: Less likely to chatter, perfect for hand drills and low-powered machines
• Smooth, Controlled Cuts: Minimal vibration for clean finishes in soft materials
• Durable HSS Construction: Long-lasting performance and consistent edge retention