Designed for heavy screwdriving tasks and precise drilling in various materials. Do you need a set of robust screwdriver bits and multi-material drills to complete your interior construction work? Then the PRO Impact Mixed Set is the right choice. The screwdriver bits are made from modified steel for greater stability. With the laser markings, you can quickly select the required bit. We have also used the same modified steel for the drills and equipped them with carbide tips, allowing you to drill new holes effortlessly. The PRO Impact Mixed Set is an excellent choice for interior builders and installers who need reliable screwdriver bits and drills. The screwdriver bits feature a torsion zone that absorbs torque stresses at the tip of the bits to ensure they do not break. The bits have color-coded rings that indicate the head type and laser markings to assist you in selection. The HEX-9 Multi-Construction drills have durable cutting edges and carbide tips for added hardness. Their spirals efficiently remove chips, extending the life of the drills. The set is housed in a sturdy case and arranged in holders, allowing you to assemble your own toolbox. Impact-resistant 1/4-inch hex shank for use with impact drivers and drill drivers.