With the Bosch cordless punch drilling screwdriver GSB 18V-28 + accessories in L-Case Pick & Click, you are well equipped., The handy cordless screwdriver has a metal boring feed. The risk of the motor overheating is reduced thanks to the Electronic Motor Protection (EMP) and Electronic Cell Protection (ECP), which also leads to a longer lifespan. To transport your tool safely. : 8 mm, max. Drill diameter: 38 mm, battery type: lithium ions