Review on Efficient Woodworking Metal Drilling With Yangoutool 3Pcs HSS Spiral Grooved Step Drill Bit Set by Matt Tito

Never use these on stainless steel, hardened steel (like Bed frames) Just a a tip from a guy that drill metals frequently! Other wise they are great. They cut a a nice round hole and removes the edge burs.* Another tip if you want to drill bed frames . Get a MAPP gas torch and heat where you want the hole to be to cherry red. Then while hot, use a drillpress with a bit rated for hi-speed steel. The heating removes the temper. I do it all the time. And remember always wear PPE's and have a fire extinguisher close. Safety 1st!