[Premium Aluminum Alloy Material] This limit countersink drill bit set is made of premium aluminum alloy on the main body, which is beautiful, with high hardness and long service life [Quick Change] The drill head can be replaced according to needs, easy to use, and quick replacement. Two-way quick release. It can be used for countersinking and screwing, double-purpose operating, convenient and simple, and can be applied to a variety of places [What You Get] The package includes 1 limited countersink drill, 4 countersink drill bits, 1 hexagonal wrench and 1 plastic ring. This kit can meet the drilling needs of various common sizes of 3/16x1/2inch, 1/8x3/8inch, 11/64x1/2inch, 5/32x3/8inch and 9/64x3/8inch [Easy to Adjust] It is adjustable with scale. The hexagon socket screw fixed slot can be adjusted according to needs, engraving, clear and not easy to wear, and the countersink is more accurate [Widely Uses] This wood countersink drill bit set is suitable for bench drills, hand drills and conventional electric drills. It can be used for wood, fiberboard, particleboard, plywood, etc Product Name: Limit Countersink Drill Bit Set Size: 72mm body Applicable models: hand drill/charging pile/bench drill, etc. Applicable materials: Suitable for deep holes in hard wood, used to drill screw holes on wood and sink the screw heads The actual product may have slight color difference or difference, which will not affect the use Colour:C: Blue Material:Aluminum Alloy Package Contents: 1 x Limited Countersink Drill 4 x Countersink Drill Bits 1 x Hexagonal Wrench 1 x Plastic Ring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.