The Springfield 2-3/8" Adjustable Mainstay Package pairs a high-strength anodized aluminum air-powered pedestal with a locking Trac-Lock™ swivel and slide for a complete, ready-to-install boat seat foundation. The 500 newton pneumatic cylinder delivers smooth, tool-free height adjustment, while the 9" round anodized base and integrated swivel-slide combo keep the setup solid underway.

Specifications:

• Pedestal diameter: 2-3/8"
• Construction: High-strength anodized aluminum
• Height adjustment: Air-powered, 500 newton cylinder
• Adjustment range: 14.5" to 20.5"
• Base: 9" round anodized
• Includes: Locking Trac-Lock™ swivel and slide
• Seat mount: 3100531-LAR1