The drill bit uses a high-hardness carbide tip, which has a longer service life and good performance that excellent for making clean and accurate hole. The round design of the drill bit makes the hole punching more perfect, which makes the product more effective to punch holes. Make the hole smoother and more efficient to complete the hole opening task. We truly believe we make some of the most innovative products in the world, and we want to make sure we back that up with a risk-free ironclad 30 day guarantee. If you don't have a positive experience for ANY reason, we will do WHATEVER it takes to make sure you are 100% satisfied with your purchase. Buying items online can be a daunting task, so we want you to realize that there is absolute ZERO risk in buying something and trying it out. If you don't like it, no hard feelings we'll make it right We have 24/7/365 Ticket and Email Support. Please contact us if you need assistance. If you have problems with the purchase, please notify the customer service
