The Rhino Multi-Pro Square Chuck Assembly (part 301425) fits Rhino Multi-Pro gas post drivers and is custom-machined for 2-5/8 in. square posts, gripping the flat faces so the post can’t slip or twist under impact. A secure chuck-to-post fit keeps energy transfer efficient and the post aligned through the full drive square sign posts, fence posts and anchor posts go in straight.

Square stock is common in signage, security barriers and square anchor systems, and a profile-matched chuck is what lets a gas driver handle it cleanly; high-strength hardened steel construction takes repeated jobsite impact. Find the rest of the chucks, caps and adapters in the GPD gas series accessories, or start from the Rhino gas post drivers page to build the full setup.

• Fits Rhino Multi-Pro gas powered post drivers; Rhino part 301425
• Custom-machined for 2-5/8 in. square posts secure grip without slipping
• Efficient energy transfer keeps square posts aligned through the full drive
• High-strength hardened steel with corrosion-resistant finish for repeated impact
• Applications: square fence posts, signposts, security posts and barrier supports
• Stocked by Crowder Supply in Denver, Colorado