... manchine: Atlas Copco Cop131EB, BBE57; Furukawa M120, Drill Shank Adaptors/drill chuck adaptor/impact drill adaptors/R38, T38 threadMatching ... threaded button bits belong to threaded drilling products. Shank adapter is used for transmitting power between drill machine ... the world, there are different drill machines, so different shank adapters are available, like Atlas Copco, Tamrock, Ingersoll Rand ...