If you have created cracks and wasted material while drilling, now use Triangle-Overlord Shank Multi-Function Drill Bits which, thanks to their triangular design, never allow the wood to crack. Besides, it helps to drill deeper holes in wood easily and effortlessly. By owning these super powerful drill bits you will save material, time and energy. They can be easily attached to a drill bit to provide a good grip. What you will get: OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.