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 step drills bog down or wander under impact-wrench torque. SITEH3RO™ step drills are specifically engineered for impact-wrench drive. No drill press required. Punch through plate steel on the job, in place.
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-step drill bit that cuts progressively larger hole sizes from a single tool. Designed for impact-wrench drive. No drill press required. Split point starts the cut without a pilot hole. Ideal for plate steel, panel cut-outs, and conduit knockouts.
SKUSD125500
Size1/8" to 1/2"
Drive3/8" or 1/2" square
Free US shipping on all orders. Ships from Lombard, IL within 24 hours.
