For use with BXA tool posts 250-200 or 250-222. Heavy Duty Boring Bar Holder to holds 3/4" tool with bushing, 1" diameter without bushing.Equipped with a split bushing to accommodate a boring bar of smaller diameter. Interchangeable with Dorian, Aloris, & Phase II BXA series mini tool posts. Completely sealed for maintenance free operation. Grips bar with extreme regidity; cuts smoothly without chatter. 5Pcs BXA #4 250-204 Quick Change Tool Post 10-15 Heavy Duty Boring Bar Holder. We will do everything we can to give you a satisfying solution. We do our best to resolve any issue. So please talk with us and we will not let you down. FEEDBACK IS VERY IMPORTANT TO US. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Workholding & Toolholding\Toolholding\Quick Change Tool Post". The seller is "backyard-ly" and is located in this country: US. This item can be shipped to United States.