BoschProfessional 1x Expert Power Change Plus Pilot Drill Bit (Ø 8.5 mm, Accessories Rotary Impact Drill)

The drill does exactly as required, so no negative comments.

Bought as a replacement for a broken one in a Bosch hole saw kit (kwick change type) although drill seems identical in many ways the hex shaft does not quite extend up the shaft far enough to fit the adaptor. A quick touch with the grinder sorted it though so I'm happy enough!