TMX 1-1/2 Dia SI-MCLNR 24-4 Boring Bar Holder. See attached pictures for more details. The item "TMX 1-1/2 Dia SI-MCLNR 24-4 Boring Bar Holder" is in sale since Monday, June 06, 2016. This item is in the category "Business & Industrial\Manufacturing & Metalworking\Metalworking Tooling\Toolholding\Boring Tool Holders". The seller is "emitools" and is located in Houston, Texas. This item can be shipped worldwide.