BT30 boring tool holder in excellent condition, it has been barely used. I don't have a lot of information on it other than the part numbers listed below. It was reported to me that it has a range of 4.87 mm. 191 to 20.12 mm. 792, but I have no way to verify that. The item "Nine9 BT30 Boring Bar Holder 99146-BT30H / BT30-146-51 / 99151A-06 / C20-ID06" is in sale since Monday, February 25, 2019. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Workholding & Toolholding\Toolholding\Boring Tool Holders". The seller is "iwhitey" and is located in Spencerport, New York. This item can be shipped worldwide.