Diameter: 5/16"Overall Length: 6"Drillable Length: 4"Shank: SDS-PLUSDesigned For Fast, Efficient Drilling Through Rebar Reinforced ConcreteFull Head Carbide Tips Last Longer In Rebar And Faster Drilling Speed With Less Carbide WearCentric Conical Tip Guides The Bit Through Concrete, And Provides Rounder HolesNew Flute Design Helps With Faster Dust Removal, Also Keeps The Bit CoolerLast Up To 4X Longer In Rebar Than Standard Bits Due To New Diffusion Bonding Technology