The Power Tool Industry Association 2025 Tool Innovation Award recognises tools that meaningfully change how tradespeople work.
SITEH3RO™ won for letting one operator do work that previously needed a drill press and bench setup, using the impact wrench they already own.
Powered by your impact wrench
Most reamers chatter or oversize the hole under impact-wrench torque. SITEH3RO™ step reamers are specifically engineered for impact-wrench drive. No drill press required. Step-finish holes to exact spec on the job.
Fits any 1/2" or 3/4" square-drive impact wrench.
Built by people who work metal
SITEH3RO™ is the direct-to-tradesperson line from Unibor, a Lombard, Illinois metalworking-tool specialist that has supplied bridge builders, structural fabricators, and US shipyards for decades.
Designed by engineers who've spent careers in fab shops, to the standards real tradespeople set.
// About SITEH3RO™
Designed by Unibor. Made for metal.
SITEH3RO™ is Unibor's ultimate handheld metalworking solution - designed for on-site metalworking with just an impact wrench. Made for metalworkers, #BUILTForMetal
Multi-size step reamer that finishes a range of hole sizes from a single tool. Step geometry produces clean, on-spec holes without chatter even under impact-wrench drive. Ideal for bridge work, structural connections, and heavy-equipment fab.
SKUSR312562
Size5/16" to 9/16"
Drive1/2" square
Free US shipping on all orders. Ships from Lombard, IL within 24 hours.
