![Springfield 2-7\/8" Heavy-Duty Adjustable Mainstay Package - 10"-12" [1250456-L]](https://cdn11.bigcommerce.com/s-2vfwgyus8b/images/stencil/1280x1280/products/77607/132606/110579XL__22382.1762233107.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-2vfwgyus8b/images/stencil/500x659/products/77607/132606/110579XL__22382.1762233107.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.
- MPN:
- 1250456-L
![Springfield 2-7\/8" Heavy-Duty Adjustable Mainstay Package - 12"-14.5" [1250450-L]](https://cdn11.bigcommerce.com/s-2vfwgyus8b/images/stencil/500x659/products/77606/132605/110578XL__71323.1762233104.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-2vfwgyus8b/images/stencil/500x659/products/77608/132607/110580XL__25798.1762233110.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-2vfwgyus8b/images/stencil/500x659/products/77605/132604/110577XL__69585.1762233102.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-2vfwgyus8b/images/stencil/500x659/products/67566/116085/99070XL__69367.1681973425.jpg?c=1 "Springfield 2-7\/8\" Heavy Duty Mainstay w\/Swivel [1250300]")