This STL design showcases a rectangular block featuring a series of vertically aligned holes with gradually increasing diameters from 1mm to 12 mm . It is intended to securely organize and store drill bits of various sizes. The smallest holes are positioned on one end and progressively increase in size toward the opposite end, making it easy to sort and access the correct bit during work. The holder is compact and can be 3D printed , and it can be placed on a workbench or mounted vertically on a wall