Dorian D50DA-41 Quick Change Tool Holder. 2.0 Bore Bar Capacity. The item "Dorian D50DA-41 Quick Change Tool Holder 2.0 Bore Bar Capacity" is in sale since Friday, October 16, 2015. This item is in the category "Business & Industrial\Manufacturing & Metalworking\Metalworking Tooling\Toolholding\Boring Tool Holders". The seller is "bratex_llc" and is located in Johnson City, New York.This item can be shipped worldwide.