![Springfield 2-3\/8" Adjustable Mainstay Package w\/Locking Swivel Slide [1250150-L1]](https://cdn11.bigcommerce.com/s-dbaeft6mdz/images/stencil/1280x1280/products/147242/145102/111099XL__34199.1762396134.jpg?c=1 "Springfield 2-3\/8\" Adjustable Mainstay Package w\/Locking Swivel Slide [1250150-L1]")
![Springfield 2-3\/8" Adjustable Mainstay Package w\/Locking Swivel Slide [1250150-L1]](https://cdn11.bigcommerce.com/s-dbaeft6mdz/images/stencil/500x659/products/147242/145102/111099XL__34199.1762396134.jpg?c=1 "Springfield 2-3\/8\" Adjustable Mainstay Package w\/Locking Swivel Slide [1250150-L1]")
2-3/8" Adjustable Mainstay Package with Locking Swivel & Slide
Package includes 2-3/8″ high-strength anodized aluminum air-powered height adjustment pedestal (500 newton cylinder) with 9″ round anodized base, and locking Trac-Lock™ swivel and slide.
Specifications:
- Adjusts: 14.5" to 20.5"
- Seat Mount: 3100531-LAR1
![Springfield 2-3\/8" Adjustable Mainstay Package w\/Locking Swivel [1250100-L1]](https://cdn11.bigcommerce.com/s-dbaeft6mdz/images/stencil/500x659/products/147241/145101/111098XL__37539.1762396132.jpg?c=1 "Springfield 2-3\/8\" Adjustable Mainstay Package w\/Locking Swivel [1250100-L1]")
![Springfield 2-3\/8" Adjustable Locking Short Mainstay Package [1250250-L1]](https://cdn11.bigcommerce.com/s-dbaeft6mdz/images/stencil/500x659/products/147243/145103/111100XL__62092.1762396137.jpg?c=1 "Springfield 2-3\/8\" Adjustable Locking Short Mainstay Package [1250250-L1]")
![Springfield 2-7\/8" Heavy-Duty Adjustable Mainstay Package w\/Slide [1250301]](https://cdn11.bigcommerce.com/s-dbaeft6mdz/images/stencil/500x659/products/147199/145041/110577XL__87594.1762233572.jpg?c=1 "Springfield 2-7\/8\" Heavy-Duty Adjustable Mainstay Package w\/Slide [1250301]")
![Springfield 2-7\/8" Heavy Duty Mainstay w\/Swivel [1250300]](https://cdn11.bigcommerce.com/s-dbaeft6mdz/images/stencil/500x659/products/80271/84576/99070XL__68771.1739495762.jpg?c=1 "Springfield 2-7\/8\" Heavy Duty Mainstay w\/Swivel [1250300]")
![Springfield Trac-Lock Swivel\/Slide Non-Locking Mount f\/2-7\/8" Post [1100521-L1]](https://cdn11.bigcommerce.com/s-dbaeft6mdz/images/stencil/500x659/products/80236/84464/98983XL__72700.1739495760.jpg?c=1 "Springfield Trac-Lock Swivel\/Slide Non-Locking Mount f\/2-7\/8\" Post [1100521-L1]")