Drill starter bits are made from high tensile strength drill casing with four or six carbide-tipped teeth. One carbide tooth is angled slightly inward to break up the core and prevent clogging. This drill starter bit will penetrate rebar, concrete & asphalt with ease. No need to pre-core concrete slabs, walkways or roads. Extremely durable.
Standard sizes are 2.875" and 3.5" OD. Custom lengths and diameters also available.