Fits 1 1/8” / 30mm hex shank import style Demolition Hammers – Shank style is hex with round end on - PLEASE CHECK YOUR HAMMERS VERY CAREFULLY BEFORE PURCHASE - This bit DOES NOT fit Makita, Milwaukee, Bosch, Dewalt or Hitachi hammers Turn your demolition hammer into a T-post driver with a deeper socket design the driver maintains alignment and saves time and energy driving t-post or any solid post that is less than 2” in diameter. One-piece machined construction with a 2.5” long 2” Diameter Drive Socket - saves a lot of pounding with a manual t-post driver. The 2” deep socket guarantees easy installation of T posts. Hardened steel body for increased durability –tool hardness specification of 45-55 Rockwell C Tool finish is perfect for commercial and industrial applications and keeps the tool from rusting (1 Year Guarantee or Full Refund. No Matter What.)