CO-Z HSS 5PCS Titanium Spiral Grooved Step Drill Bit Set with Auto...

CO-Z HSS 5PCS Titanium Spiral Grooved Step Drill Bit Set with Automatic Center Punch, Unibit Drill Bits Set for Sheet Metal with Aluminum Case, Multiple Hole Stepped up Bits for DIY Lovers

• Durable Titanium Coated Bits W/Spiral Grooves ----- The spiral grooved drill cut more smoothly than straight grooved ones, the drill bit is sharp and can easily drill perfect holes in the metal sheet while the Titanium coating improves durability hence lengthening the service life.
• 50 Sizes In 5 ----- Our bits set includes five standard step drill bits that are capable to drill 50 holes with different diameters, saving you time and efforts; to make your holes more accurate, please do use a center punch to locate before drilling.
• Universal Compatibility ----- The step drill bits help you to drill holes with different diameters simultaneously, compatible with aluminum, copper, steel sheets and plastic and wood board that is less than 3mm/0.12 in. in thickness.
• Less Splashing & Saves Your Money ----- X-type opening design can facilitate the removal of cutting waste when drilling to keep the drill bit clean.
• Clear Laser Measurements ----- The well-manufactured bits come with very highly visible laser measurements for you to easily find the size you want, improving your drilling accuracy.