1、Applications: These drill bit extension rods are suitable for nuts, pneumatic screwdrivers, electric screwdrivers, pneumatic drills, manual screwdrivers, etc. It is an ideal tool for conversion. 2、Specification: Extended screwdriver drill bit and socket combination tool, with a 1/4 inch hex shank design and a total length of 60mm extension rod, which can meet various fastening needs. 3、Excellent Steel: These long hex socket bits are made of excellent CrV steel material, has excellent rust, wear and high pressure resistance, high strength, and no deformation or breakage. 4、Magnet Design: The bit holder is equipped with a permanent magnet design, which has good absorption and ensures that the bit holder is firmly attached to the drill bit, tightly grasping the bit and fasteners. 5、Applicable Fields: This kit includes 10 pieces hex socket bits, which are installed on power tools and widely applied in furniture installation, mechanical maintenance, and woodworking projects.