Makita B-61335 9/16" x 21" SDS‘MAX Bit, 2‘CutterMakita B 61335 Makita has a deep line up of concrete solutions, including premium carbide bits for concrete drilling. Makita SDS MAX 2 Cutter Bits feature premium carbide tips for efficient drilling and longer service life, with a special flute design that is engineered for faster dust removal than standard bits. Makita SDS MAX 2 Cutter Bits are ideal for a range of general purpose concrete drilling applications. Key Features DESIGN : Self centering