1.We are factory 2.SDS MAX shank Double Flute Cross Tip 3.Material:40CR,YG8C 4.Application: Concrete, Brick, Masonry, ... kentaniumSurface:Polishing,sand blast.Specification:SDSMAX shank electric hammer drill bit is made of high grade steel,which have high strength ... many kinds of electric hammer drill, masonry drill, chisel,router bit, concrete Hole saw and related products. 5.Company Picture6. ...