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 Ideal for contractors , woodworkers , and enthusiasts requiring surgical accuracy for cabinet installations , plumbing repairs , or automotive maintenance tasks 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 Crafted from stainless steel with knurled grip zones , this hexagonal shank extension systems boosts torques transfer by 30 % while resisting rust and rotational wobble during heavy duty operations, Manufacturer: TSMORY