// 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
STEP REAMER KIT · 3 PIECE
Cover Every Major Bolt Size
SKU · SHUSR1
Step Reamer Set
Expand 15 sizes with three tools.
Three step reamers covering 15 sizes from 5/16" to 1-1/16". By Unibor. Built For Metal.™
3
Step
reamers
reamers
15
Sizes
covered
covered
75%
Longer
tool life
tool life
What's in the kit
3 step reamers, 15 sizes covered
5/16"-9/16"
STEP REAMER
9/16"-13/16"
STEP REAMER
13/16"-1-1/16"
STEP REAMER
$389.92
PTIA 2025 Tool Innovation Award
The Professional Tool & Industrial Alliance recognised the SITEH3RO™ system with its 2025 Tool Innovation Award.
The award recognises tools that materially change how a job gets done on site. The SITEH3RO™ system was selected for letting tradespeople do bench-quality drilling, reaming and threading using only the impact wrench they already carry.
Free US Shipping
Free shipping on all orders to the continental United States. Orders ship within 1 business day from our Lombard, IL warehouse.
Most orders arrive in 3 to 5 business days.
Designed by Unibor.
Three step reamers covering 15 sizes from 5/16" through 1-1/16". Dual flute design for smooth, chatter-free reaming. SITEH3RO™ coating on every reamer for up to 75% longer tool life. PTIA 2025 Tool Innovation Award winner.
| Pieces | 3 step reamers |
|---|---|
| Coverage | 15 sizes, 5/16" through 1-1/16" |
| Material | High-speed steel |
| Flute | Dual flute |
| Coating | SITEH3RO™ coating, up to 75% longer tool life |
| Shank | 7/16" hex |
| Compatibility | SITEH3RO™ holders + standard 3-jaw drill chucks |
Free shipping on all orders within the continental United States. Orders ship within 1 business day from our Lombard, IL warehouse. Most arrive in 3 to 5 business days.
