Need machining the back plate shoulders based on different 4 jaw independent chucks. The back plate outside diameter is smaller than the lathe chuck diameter due to the mounting holes are towards the center of the lathe chuck, then the recess diameter D2 of the lathe chuck still provide a tight fit. Discover more products here: Quality Machine Shop. 4-30 Fulton Way Richmond Hill, ON L4B 1E6 Canada. We will choose a carrier unless you indicate a preferred method.Listing and template services provided by inkFrog. The item "D1-3, 8 Fully Machined Lathe Chuck Back Plate, #2600-0165" is in sale since Tuesday, August 4, 2020. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Workholding & Toolholding\Workholding\Other Workholding". The seller is "quality_machine_shop" and is located in TORONTO, ONTARIO. This item can be shipped worldwide.