Dimensions 15-60 mmProFit Endura with HSCO M35 pilot drill.ProFit Endura is made with a one-piece shank and crown and has a loose center drill. The teeth are made of hardened steel with carbide as carbide and the teeth are ground in a unique way: Each tooth has two cutting surfaces. The cutting surfaces of the teeth are staggered for every other tooth. This makes 4 cuts on the hole saw. Which, regardless of the material, increases the service life and provides a faster hole drilling than other hole saws on the market. Thanks to the tooth design, the hole saw operates more quietly compared to traditional hole saws. The geometry of the teeth means that the saw groove is emptied of chips by each tooth. This results in lower heat development and significantly lower noise levels than similar drills on the market. Use cutting oil or paste to extend the service life and shorten the working time. Teeth can be sharpened. Endura drill bit cuts/mills a ring in the material, once the material is cut through, the ring can be easily removed as the Endura cuts always ensure that the material goes completely free from the inside of the body. Unique advantages: Endura shows its strength together with battery machines. Endura can also be used with a traditional magnetic drill. Drilling with the drill bit is fast and more efficient than drilling with a regular twist drill. The pressure per tooth is significantly reduced, requiring much less energy and improving productivity and economy.