Delta Mobile Base 50-277 (USED) Delta Mobile Bases and Extensions will provide your stationary machines with increased mobility for positioning them anywhere you want, whether its across the shop or out-of-the-way for convenient storage. Delta Mobile Bases are made of heavy gage steel and feature a foot-operated control lever that raises and lowers the base for easy movement and positioning. 10" Contractor's Saws, *13" Planers, 15" Planers on open type straight leg stand only. Dimension A =25-3-3/4" Dimension B = 23-1/4"