Amazon has the 5pc BOSCH IMC500 Impact MultiConstruction Drill Bit Set on sale for $15 with free shipping on $25+ or with Prime. Can be used in impactors and hammer drill drivers.

Includes: (1) 5/32-Inch x 4-Inch x 6-Inch, (1) 3/16-Inch x 4-Inch x 6-Inch, (1) 1/4-Inch x 4-Inch x 6-Inch, (1) 5/16-Inch x 4-Inch x 6-Inch, (1) 3/8-Inch x 4-Inch x 6-Inch plus plastic case.