Delta Industrial 46-463 Modular Midi-Lathe Bed Extension Midi-Lathe bed extension adds an additional 25-1/2-inch of length between centers to accommodate longer turning applications Modular design allows you to connect multiple extensions 1 extension = 42-inch of length between centers 2 extensions = 67-1/2-inch of length between centers DELTA recommends the use of no more than 2 extensions total