![Springfield 2-7\/8" Heavy-Duty Adjustable Mainstay Package - 10"-12" [1250456-L]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/1280x1280/products/44272/61488/110579XL__06729.1762244299.jpg?c=1 "Springfield 2-7\/8\" Heavy-Duty Adjustable Mainstay Package - 10\"-12\" [1250456-L]")
![Springfield 2-7\/8" Heavy-Duty Adjustable Mainstay Package - 10"-12" [1250456-L]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/44272/61488/110579XL__06729.1762244299.jpg?c=1 "Springfield 2-7\/8\" Heavy-Duty Adjustable Mainstay Package - 10\"-12\" [1250456-L]")
2-7/8" Heavy-Duty Adjustable Mainstay Package - 10"-12"
Package includes 2-7/8″ high-strength rigid 4-keyed anodized aluminum air-powered height adjustment pedestal (500 newton cylinder) with 9″ round anodized base, and locking Trac-Lock™ swivel & slide. 3-1/2″ outer post with 2-7/8″ inner post.
![Springfield 2-7\/8" Heavy-Duty Adjustable Mainstay Package - 12"-14.5" [1250450-L]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/44271/61487/110578XL__19067.1762244297.jpg?c=1 "Springfield 2-7\/8\" Heavy-Duty Adjustable Mainstay Package - 12\"-14.5\" [1250450-L]")
![Springfield 2-7\/8" Heavy-Duty Adjustable Mainstay Package w\/Tension Knob - 9" Base [1250456-LC]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/44273/61489/110580XL__59697.1762244302.jpg?c=1 "Springfield 2-7\/8\" Heavy-Duty Adjustable Mainstay Package w\/Tension Knob - 9\" Base [1250456-LC]")
![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" 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]")
![Wise Mainstay Air Powered Adjustable Pedestal w\/2-3\/8" Post [8WP144]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/35569/48232/100921XL__20772.1692948434.jpg?c=1 "Wise Mainstay Air Powered Adjustable Pedestal w\/2-3\/8\" Post [8WP144]")