Product Details

7-Piece Adjustable Countersink Drill Bit Set (HSS 4241, Hex Key)

Description
Achieve perfectly countersunk screw holes with this 7-piece HSS 4241 countersink drill bit kit. Precision-adjustable depth, durable construction, and hex key control make it ideal for wood, plastic, PVC, and soft metal—fits hand drills and drill presses. This 7-piece drill bit set contains sizes: 3, 3.5, 4, 4.5, 5, 5.5, and 6 mm.

Description

Upgrade your workshop with this 7-piece adjustable countersink drill bit set, crafted from high-speed steel 4241 for reliable use on wood, plastic, PVC, and more. Each bit (1/8”–7/32” sizes) is matched to popular screw gauges (#5–#12) for accurate pilot holes and clean chamfered edges, reducing splitting on delicate panels. The included hex key allows precise adjustment of countersink and drilling depth for different screw lengths and flush finishes. Compatible with standard hand drills and bench units, it’s an essential for anyone demanding smooth, professional results every time.

Specifications:

Bit Sizes: 3, 3.5, 4, 4.5, 5, 5.5, 6
Screw Compatibility: #5, #6, #7, #8, #9, #10, #12
Material: Drill bits—High Speed Steel 4241 (HSS4241); countersink sleeve—#45 steel (black oxide finish)
Adjustment: Hex key for easy removal/adjustment of countersink/chamfer depth
Drill Compatibility: Bench drill, hand drill, conventional electric drill
Application: Drilling & countersinking screw holes in wood, plywood, fiberboard, plastic, PVC, particleboard, rubber

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