What is the best bit for a jackhammer?

In industrial of mining, blasting, quarrying and construction, Jack hammers are usually used to drilling small holes. And the best bit for jack hammer is taper bits. Taper bits can be divided into 11°, 12°, 7° angle, Hex22mm and Hex25mm connection, the diameter of taper bits include 32mm, 34mm, 36mm, 38mm, and 40mm.