Bosch 2608596157 SDS-Plus Pilot Drill Bit for Arbor, Hex Adapter, 8mm x 120mm - - Amazon.com
Amazon.com: wolfcraft Annular Bit, Tungsten Carbide Tipped, with SDS Plus Mandrel I 5460000 I for Electrical and Plumbing installations in Concrete, Brick Walls and Stone; Cutting Depth 46 mm : Industrial & Scientific