Details: *100% new and high quality *Made of high quality material, durable and practical to use *Electric hammer wall hole drill 110mm connector square rod / round rod * S DS D iamond C ore B it P lus A rbor for E lectric H ammer M 22 S quare A dapter R ound R od *Removable construction, extender adapter and core drill.Industrial grade adapter is made of a solid piece of alloy steel *The sds connector for electric hammer. Just drilling a few holes *It is not replacing electric diamond drill. Electric hammer can only pierce the brick wall, can not add water, so need to add water by yourself *Can not pierce the reinforced wall, suggested to use 63mm diamond core bit or less than 63mm.Perfect accessory for your sds plus hammer drill * Material: S teel * Length: app.11cm / 4.33in (Approx.) * Color: A s the picture s show *Optional Type : Square, Round ( As Pictures Show ) Package Contents: 1*Core Bit Adapter Note: The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.