Multi Track T-Slot Profile Fence Saw Table Sliding Push Block Bakelite Milling. Specification: K50# (50mm high), K66# (66mm high). Length:300mm, 400mm, 500mm, 600mm, 800mm. Purpose :Carpentry sawing table, CNC Laser, electric wood milling inverted/router table, chute track support, push ruler back fence, fixed auxiliary slide etc. Return accepted in 30 days after you receive the item. Return package must be in the original packaging, item must be in new condition.