• ABYC Class: AD (H-31 Driver)
• 2-7/8″ Post Mount With Bushing For Snug Fit
• Large 7-1/4″ x 13″ Seat Mounting Platform, Travels 5-1/4″ Forward And Backward On Self Lubricating Pads, Rotates 360 Degree
• Centrally Located Locking Handle, Easy To Reach With Left Or Right Hand