![Springfield 2-3\/8" Adjustable Mainstay Package w\/Locking Swivel [1250100-L1]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/1280x1280/products/44316/61554/111098XL__87036.1762406951.jpg?c=1 "Springfield 2-3\/8\" Adjustable Mainstay Package w\/Locking Swivel [1250100-L1]")
![Springfield 2-3\/8" Adjustable Mainstay Package w\/Locking Swivel [1250100-L1]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/44316/61554/111098XL__87036.1762406951.jpg?c=1 "Springfield 2-3\/8\" Adjustable Mainstay Package w\/Locking Swivel [1250100-L1]")
2-3/8" Adjustable Mainstay Package with Locking Swivel
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.
Specifications:
- Adjusts: 14" to 20"
- Seat Mount: 3100031-LAR1
![Springfield 2-3\/8" Adjustable Mainstay Package w\/Locking Swivel Slide [1250150-L1]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/44317/61555/111099XL__83206.1762406953.jpg?c=1 "Springfield 2-3\/8\" Adjustable Mainstay Package w\/Locking Swivel Slide [1250150-L1]")
![Springfield 2-3\/8" Adjustable Locking Short Mainstay Package [1250250-L1]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/44318/61556/111100XL__57157.1762406955.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-akrdq0rr06/images/stencil/500x659/products/44270/61486/110577XL__79705.1762244294.jpg?c=1 "Springfield 2-7\/8\" Heavy-Duty Adjustable Mainstay Package w\/Slide [1250301]")
![Springfield 2-7\/8" Trac-Lock III Locking Swivel [1100021-L1]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/44268/61484/110574XL__05932.1762244289.jpg?c=1 "Springfield 2-7\/8\" Trac-Lock III Locking Swivel [1100021-L1]")
![Springfield 2-7\/8" Heavy Duty Mainstay w\/Swivel [1250300]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/34318/45695/99070XL__96471.1681953711.jpg?c=1 "Springfield 2-7\/8\" Heavy Duty Mainstay w\/Swivel [1250300]")