The Rhino Low Drive Extension Drive Cap lets you drive square Telespar posts to full depth without running out of reach: it seats over the post and adds length between the driver and the post head, so driving continues after the post top drops below where the driver would normally stop. That makes it the right tool for setting breakaway sign and barrier posts all the way down.
Sizes fit square posts from 1-1/4 in. up to 2-3/4 in., selected on this page, with hardened steel at the contact points for repeated driving. It’s part of the Rhino PD pneumatic series accessories; for standard-height square post work there’s the square post drive cap, and the drivers themselves are under post drivers & pounders.
- Seats over square Telespar posts and adds extension length to drive below a standard cap’s stop
- Sets breakaway sign and barrier posts to full depth without switching tools mid-drive
- Secure square grip keeps driving force on the post centerline and the post plumb
- Hardened steel at the contact points stands up to repeated driving
- Sizes available to fit 1-1/4 in. through 2-3/4 in. square post sizes
- Stocked by Crowder Supply in Denver, Colorado

