Package includes:

Drill set (7Pc tapered drill bits, 7Pc countersinks, 7Pc adjustable stop collars, 1Pc hex key and 1Pc ring)

Pre-drills for wood screws and makes pilot holes with perfect tapers ever time.

This set is perfect for all the popular wood screw sizes.

• Drill Material: HSS;Chamfering device material: Steel
• Size: 5# drill diameter 3.18mm; 6# drill diameter 3.58 mm;7# drill diameter 3.97 mm;8# drill diameter 4.37mm; 9# drill diameter 4.76mm;10# drill diameter 5.15mm; 12# drill diameter 5.56mm
• Taper drills have more gripping power than standard drills.
• The adjustable stop collars can be adjusted up and down.
• Drill can be adjusted to the desired drilling depth.