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
Essential UNC Threading Sizes
Four large-diameter UNC taps for structural and heavy fabrication. By Unibor. Built For Metal.™
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 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.
SITEH3RO™ is Unibor's ultimate handheld metalworking solution - designed for on-site metalworking with just an impact wrench. Made for metalworkers, #BUILTForMetal
Four large-diameter UNC taps for structural and heavy fabrication threading work. Thread up to 20× faster than hand tapping when driven by an impact wrench. SITEH3RO™ coating for up to 75% longer tool life. PTIA 2025 Tool Innovation Award winner.
| Pieces | 4 spiral-point taps |
|---|---|
| Sizes | 1/2", 5/8", 3/4", 1" UNC |
| Material | High-speed steel |
| Design | Spiral point, chip-ejecting |
| 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.
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