Very compact storage in the Tool-Check Modular. The Tool-Check Modular system The Tool-Check Modular system offers the possibility of combining Tool-Check Modular products in a super-compact manner depending on requirements. All you need is the rigid adapter 9549 or the flexible hinge 9550. The ToolCheck Modular products can be combined, exchanged or expanded at any time. Kraftform Micro 1014 bitholding screwdriver The Kraftform Micro bit holder with its power zone (1), fast rotating zone (2) and precision zone (3) perfectly meets the requirements for precision mechanical couplings. The smooth-running cap, on which you can rest your hand, ideally supports these advantages. Suitable for bits with 4 mm hexagonal. Bits with 4 mm hexagonal drive The bits have a 4 mm hexagon drive. The sizes included in the Tool-Check Modular Micro 1 are particularly suitable for precision mechanical jobs.