FEATURES Simply drill holes at the marked points with an electric drill, then tap the wall anchors into the holes, place the fixing parts, and finally use a screwdriver to screw the self-tapping screws into the wall anchors for fixing. With a wrench to adjust the depth of the counter sleeve. The woodworking drill has the feature of centering the wood hole, drilling with less effort. Product Information Product Name: Reaming Drill Bit Set Product Material: High Speed Steel Product Size: Drill Diameter: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm Product Color: As shown in the picture Packing listeaming Drill Bit Set *1 set (subject to the main picture) Please notice: 1. Due to the long shipping time, the item may be damaged during transportation, if the item is damaged, please leave us a message through the official website immediately before posting a comment, I will solve the problem for you. 2. Due to manual measurement, the size may have 1-3cm error. 3. 3. The color displayed by different monitors may vary.