Specification: Quantity 24pcs, 300pcs Material High Speed Steel Twist drill diameter 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm Impact drill diameter 4mm, 5mm, 6mm, 8mm, 10mm Wood drill diameter 4mm, 5mm, 6mm, 8mm, 10mm Design Straight Shank Box size 23.5x17x3.5cm/ 9.25x6.69x1.38\'\' Features: - Hardness and sharp, perfect for drilling the extra thick wood. - Ideal for DIY, home and general building, engineering using, etc. 24pcs Package Included: 7 x Twist Drill Bits 5 x Impact Drill Bits 5 x Wood Drill Bits 6 x Screwdriver Bits 1 x Connecting Rod 1 x Packaging Box 300pcs Package Included: 7 x Twist Drill Bits 5 x Impact Drill Bits 5 x Wood Drill Bits 6 x Screwdriver Bits 1 x Connecting Rod 1 x Packaging Box 276 PCS Wall Plugs (5, 6, 8 , 10mm, only 300PCS set has these)