SITEH3RO™ Step Reamer Kit

SITEH3RO™ Step Reamer Kit – 3-Piece M2 HSS Set with Up to 75% Longer Tool Life

The SITEH3RO™ Step Reamer Kit is a 3-piece M2 High Speed Steel step reamer set engineered for contractors and trades professionals who need to start, expand, and clean out holes in metal with a single tool. Each reamer features a 7/16 hex impact shank, making it fully compatible with impact wrenches for high-torque on-site applications. The exclusive SITEH3RO™ coating delivers up to 75% longer tool life compared to uncoated alternatives, reducing downtime and replacement costs on demanding job sites. The kit covers all major bolt sizes and is also suitable for use in standard 3-jaw drill chucks.

Technical Specifications

Unlike standard uncoated step reamers, the SITEH3RO™ coating significantly extends service life, making this kit a cost-effective choice for contractors who regularly work with metal on-site. The 7/16 hex impact shank allows direct use with an impact wrench, eliminating the need for adapters and enabling faster, more powerful hole expansion than drill-only alternatives.

Key Features & Benefits

SITEH3RO™ Coating for Extended Tool Life

The proprietary SITEH3RO™ coating provides up to 75% longer tool life compared to uncoated step reamers. For contractors working high-volume drilling schedules, this translates directly to fewer tool replacements and lower cost per hole.

7/16 Hex Impact Shank

The impact-ready hex shank is designed for direct use with an impact wrench, delivering the high torque needed to expand holes efficiently through tough metals. This eliminates the need for additional adapters and keeps the tool ready for fast-paced site work.

Standard 3-Jaw Chuck Compatibility

In addition to impact wrench use, each reamer fits standard 3-jaw drill chucks, giving contractors flexibility to use the tool with whatever drilling equipment is available on site.

Multi-Diameter Single-Tool Operation

Each step reamer cuts through multiple diameters in a single tool, reducing the number of bits needed on site. The kit covers all major bolt sizes, making it a versatile addition to any contractor's toolkit.

M2 High Speed Steel Construction

M2 HSS provides the hardness and heat resistance required for cutting through mild steel, aluminum, brass, and plastic. This material grade is a proven standard for metal-cutting applications in construction environments.

Common Applications

Hole Expansion in Metal Fabrication

Use the step reamer to enlarge existing holes in mild steel or aluminum to precise incremental diameters, ideal for fitting bolts and fasteners on structural components.

On-Site Impact Wrench Drilling

The 7/16 hex shank allows the reamer to be driven directly by an impact wrench, making it well-suited for high-torque hole expansion tasks on construction sites.

Hole Starting and Cleaning

Step reamers are effective for starting new holes and cleaning out existing ones, ensuring clean, burr-free edges in metal workpieces.

Bolt Hole Sizing

With coverage across all major bolt sizes, the kit is ideal for sizing holes to accept standard fasteners in steel, aluminum, brass, and plastic assemblies.

Compatible Materials

• Mild Steel
• Aluminum
• Brass
• Plastic

Frequently Asked Questions

Q: What is a Step Reamer used for?
A: The SITEH3RO™ Step Reamer is designed to enlarge and expand holes with an Impact Wrench in defined increments. It is perfect for drilling through tough metals in construction and on-site work.