Grind Right's Square Doubler is a shotgun rail specifically designed for Blackriver's 5-Stair. You can also use it on any of your DIY projects! If you plan to pair this rail with the mentioned Blackriver ramp, please keep in mind that the rail will be mounted to the ramp in a different spot. This is so that the original Blackriver rail can be reinstalled without any hassle.
To be clear, the wooden ramp is NOT included.
Grind Right Fingerboarding Rails are built from 100% cold rolled steel and TIG welded to provide a rail that will last a lifetime.