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 also used the same modified steel to manufacture the drills, equipping them with carbide tips so you can easily drill new holes. The PRO Impact Mixed Set is a great 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 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 spiral design efficiently removes chips, extending the lifespan 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.