Crafted from stainless steel with knurled grip zones, this hexagonal shank extension systems boosts torques transfer by 30% while rust and rotational wobble during heavy duty operations Tackle deeply set screws and confined space drilling with these antislip drill extension rods, suitable for most 1 / 4 " hexagonal shank bits for secure fastening in ceilings, wall, and machinery Ideal for contractors, woodworkers, and enthusiasts requiring surgical accuracy for cabinet installations, plumbing repairs, or automotive maintenance tasks Professional drill bit extension set includes two 1 / 4 " hexagonal shank extensions with heat treated hexagonal wrenches, for precisions drilling in tight spaces and overhead applications Engineered for durability, the heat treated drill bit extension set delivers good in workshop environments, construction sites, and home improvement projects requiring extended reach and vibrations control, Manufacturer: RGYBAO