Step Reamer 3-Piece Kit

SKU: SHUSR1

World-Exclusive Coating
Impact Wrench Powered
PTIA 2025 Winner

All three SITEH3RO™ step reamers — 15 sizes covered in one compact case. For every common bolt diameter up to 1-1/16".

$389.92

In StockShips fast from Unibor HQ in Chicago
Award WinnerPTIA 2025 Tool Innovation
Real SupportUS-based team — call or email anytime

Works with SITEH3RO™ HoldersGot one already? You're set. First time? Pair with a 1/2" or 3/4" holder to match your impact wrench.

1/2" Holder 3/4" Holder

The SITEH3RO™ Difference

Engineered for Professionals. Exclusive by Design.

Designed by Unibor for tradespeople who value tools that last and outperform. Every SITEH3RO™ product is engineered around three things you won't find together anywhere else.

World-Exclusive

A Coating No Competitor Has

Every cutting tool in this kit carries the proprietary SITEH3RO™ coating — exclusive to us, not available from any other manufacturer. Independently high-temperature tested to 356°F. Delivers up to 75% longer tool life across the whole system, which means more jobs per tool and faster payback on the kit.

Patent Pending

Runs on the Tool Already in Your Hand

The SITEH3RO™ shank system is the only metalworking cutting-tool interface engineered to harness the full power of a modern impact wrench. Connect from any angle, lock in seconds, and turn a $200 impact driver into a full-range metalworking machine. No chucks, no adaptors, no slippage. Patent pending (WO2024/100390).

PTIA 2025 Winner

Designed by Unibor. Made for Metal.

Designed by Unibor — a metalworking tool specialist based in Lombard, Illinois, and winner of the PTIA 2025 Tool Innovation Award. Every SITEH3RO™ product is engineered by people who've worked metal for decades, to the standards real tradespeople set.

The complete SITEH3RO™ step reamer set — three tools covering 15 hole sizes from 5/16" to 1-1/16". Essential for fitters and fabricators who work across a range of bolt diameters and need one consistent solution.