Size Guide & Tool Finder

Not sure which tool you need? Find the right SITEH3RO™ product for your job in seconds.

What Do You Need To Do?

Drill New Holes

Create holes in thin gauge material

Expand Holes

Enlarge or clean out existing holes

Thread Holes

Cut threads for bolts

Align Holes

Align mismatched bolt holes

You Need: Step Drills

SITEH3RO™ Step Drills create new holes in thin gauge material from 1/8" to 1-3/8". The split point ensures accurate positioning, and the spiral flute gives fast chip evacuation. Available individually or as a 3-piece kit covering all sizes.

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You Need: Step Reamers or Car Reamers

Step Reamers expand holes across multiple sizes with one tool (5 steps each). Ideal for running through a range quickly.
Car Reamers are single-size precision tools with a spiral flute and safety collar. Best when you need an exact diameter. Available in all 13 major sizes.

Shop Step Reamers →  ·  Shop Car Reamers →

You Need: Taps

SITEH3RO™ Taps thread holes up to 20× faster than hand tapping. The spiral point design pushes swarf forward for clean threads, ready for a bolt. Available in 8 UNC sizes from 1/4" to 1", individually or in kits.

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You Need: Car Reamers

SITEH3RO™ Car Reamers align mismatched bolt holes quickly and safely. The spiral flute design and built-in safety collar reduce operator risk. Available in all 13 major sizes from 5/16" to 1-1/16", individually or in kits of 4, 6 or 13.

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Complete Size Coverage

Every hole size covered by the SITEH3RO™ range

Size Car Reamer Step Reamer Step Drill Tap (UNC)
Exact size available
Within step range
SITEH3RO