The bosch gbh 5 38 d professional sds max rotary hammer is a lightweight rotary hammer that is perfect for beginners it features an sds max toolholder for drilling up to 38mm in diameter as well as a chisel function for universal applications it has a long tool lifetime even when used for heavy duty applications because of the sturdy metal housing and compact design the 1500w motor provides a high drilling rate in concrete when teamed up with the optimised hammer mechanism technology there i