2PCS Aluminum Profile Accessories 6-10mm Countersink Step Drill Bit, M2 HSS, 135-Degree Split Point, Round Shank for Stainless Steel, Aluminum, Metal, Copper, Hard Wood, Plastic

1. tsimiuk 6-10mm twist step drill bit is suitable for m6 cylindrical head screw with a head diameter of 10mm, designed specifically for 20 series aluminum extrusion. 2. You can use the drill bit create a secondary access hole of 6-10mm in one go, without drilling twice. It saves time and effort. 3. Made of high-speed steel, durable and sharp. 4. You should use this drill bit with a drill jig or a benchtop drill to keep the drill bit vertical. if not , the drill bit can easily break. 5. the slot of aluminum profiles can trap drill bits. When drill bit get stuck, do not press down hard; instead, lift the bit to a position where it can rotate. 6. When drilling, you should add oil to decrease temperature of dril bit to protect it.

• M2 high speed steel Countersink drill bits, 2pcs. Ideal for drilling metal, stainless steel, aluminum and hard wood.
• Provide a 6mm pilot hole, which can easily drill a 10mm hole in hard meterial or can drill a 6-10mm contersink hole for m6 bolt screws in one go.
• Prevent Walking: 135-degree split point for precision start No Walking, and stays sharper longer than your standard drill bit
• You should use the step drill bit with a drill jig or benchtop to keep drill bit vertical. if not, the 6mm part of drill bit can easily break.
• The countersink step drill bit is designed specifically for 20 series aluminum extrusion, for m6 screw connection. It can create a 6-10mm countersink hole in one go, saving time and effort.