Product Overview The 11-degree tapered button bit is a rock drilling tool engineered for medium-hard rock and medium-depth holes. Compared with a 7-degree taper, its steeper profile provides stronger self-locking on the drill rod, reducing the risk of bit drop while still allowing efficient penetration and reliable bit changes. It pairs with H22 hexagonal tapered drill rods on YT23, YT24 and YT28 air leg rock drills, in a full diameter range of 26-42mm. Key Features &