Leg Tube ( Front and rear slot)

New improved part with a slot in the front and the rear for the locking pin to engage into. This part IS NOT interchangeable with chairs initially fitted with part 500-259R or part 500-259. Fitted to SB2T chair from serial #DC212063 onwards, SB3T from serial #DC312290 onwards, SB6C from serial #DC-SB6C-00988 onward and SB6W from serial #DC-SB6W-00636 to 654 plus serial #DC-SB6W-00680 onwards