These LENOX Vari-Bit Step Drill Bits feature a 2-flute design that cuts fast, clean, round holes and removes chips rapidly. The steam-oxide coating lengthens the life of each drill bit, and the split-point design starts on contact for fast penetration and less walking. Features: Patented two flute design cuts fast, clean, round holes; Split point design for faster penetration and less walking; Steam oxide coating adds durability Enhanced flute design removes chips rapidly Use of LENOX PROTOOL LUBE recommended to extend tool life - Applications: Steel; Stainless Steel; Aluminum; Brass; Copper; Laminates; Plastic; Wood - Warranty: LENOX warrants to the original owner that its products are free from defects in material and workmanship for the following periods from the date of the original purchase: Hand Tools are warranted for the anticipated life of the tool; torches and torch accessories are warranted for three years. Please provide proof of date of purchase when making claim. All other products are covered under our manufacturer.s warranty which guarantees the products to be free from defects in material and workmanship for a period of 90 days. This warranty does not apply to product that has been damaged as a result of improper maintenance, accident or other misuse, or which fails to operate due to normal wear and tear. This warranty is void if the product is repaired or modified in any way by anyone other than LENOX. LENOX makes no other warranties, express or implied, concerning the product or the merchantability or fitness thereof for any purpose. In no event shall LENOX be liable for incidental or consequential damages.