DESC: 7/8" x 11" x 16", SDS Max Shank Wild Bore Head Carbide Tipped Bit, Bosch Carbide Bits Are Manufactured To ANSI Standards, They Also Meet & Exceed ISO Standards, 98% Of The Carbide Tips Are Molded To The Specific ANSI Size, Only 2% Specials Of All Bit Diameters Are Ground To Size, Bosch Tips Stay Sharper Longer & Deliver More Holes Within Their ANSI Specification Than Competitors Bits, Bosch Shafts Wear At A Much Slower Rate Than Most Competitors & Can Take More Abuse Because Of The Bosch Technologically Advanced Conditioning Process.