1/2" masonry bit Check this out at Amazon.com Bosch LBH010 1/2 x 6 Round Hammer Drill Bit https://www.amazon.com/dp/B00ZHV74I8/ref=cm_sw_r_sms_apa_i_IiMRDbDRARF04

1/2" SDS Check this out at Amazon.com Bosch HC2081 1/2 In. x 6 In. SDS-plus Bulldog Rotary Hammer Bit https://www.amazon.com/dp/B0009H5GHQ/ref=cm_sw_r_sms_apa_i_dkMRDb9XRA1TZ