Unibor SiteHero Car Reamer, anti-grab spiral-flute reamer with safety collar

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Unibor SiteHero Car Reamer

★★★★★

Iron Line Verified

Authorized Dealer: Unibor

Official Partner

IN STOCK & READY TO SHIP

SKU: CR312

Size/Kit: SiteHero 5/16" Car Reamer

Variant

Price:

$52.50

Quantity:

Financing as low as ~$0 / month (60 mo. terms) Estimate your payment

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Extended Tool Life: Up to 75% longer tool life with the exclusive SITEH3RO™ coating
Anti-Grab Design: Spiral flute design with a safety collar reduces grabbing risk and enables quick, risk-free drilling on completion
Impact Wrench Ready: Aligns, cleans out, and expands holes on-site using a compatible impact wrench with the SITEH3RO™ holder
Full Size Range: 13 individual diameters from 5/16" to 1-1/16" plus 4-, 6-, and 13-piece kits
Also Chuck Compatible: Works in standard 3-jaw drill chucks as well as impact wrenches

Order Placed

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*Please Note: This timeline is an estimate. Certain products may require an additional 1 week for manufacturing. Please speak with your sales rep, Matthew, for official details and confirmation before placing your order.

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Experience: 20+ Years B2B • Origin: US-Based Support

EXPRESS SHIPPING

Most orders process in 1-3 days. Yes, even if it weights 400lb

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Dedicated Rep Mathew

Speak to a US-Based Equipment Specialist: (888) 308-5580

Flexible Financing

Get Upto 60 Months Financing

Brand	Unibor — SITEH3RO™ (Unibor's impact-driver-compatible job-site sub-brand)
Model/SKU	SiteHero Car Reamer (diameter/kit selected via variant)
Type	Car Reamer
Diameter	Individual fixed diameters from 5/16" to 1-1/16" (1/16" increments), or 4-/6-/13-piece kit
Shank Type	7/16" hex impact shank (also runs in a standard 3-jaw chuck)
Material	Spiral flute reamer steel with a safety collar
Kit Piece Count	4-piece, 6-piece, or 13-piece kit options available alongside 13 individual sizes

Key Information

Order Cutoff Time: 2:00 PM EST
Order Handling Time: 1–3 business days (Monday–Friday)
Transit Time: 1–7 business days (Monday–Friday)
Total Estimated Delivery Time: 3–11 business days (Monday–Friday)
Shipping Availability: Free Shipping On some Items In The Contiguous United States only

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Job Site Proven

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Frequently Asked Questions

Car reamers are shorter and built to fit into tight spaces like under vehicles or inside framework, while bridge reamers are longer and intended for larger structural steel work.

A reamer aligns, deburrs, and enlarges pre-drilled or punched holes in metal to a precise finished diameter, correcting misaligned or undersized holes.

For a blind (non-through) hole, the reamer is fed in slowly at low speed with cutting fluid and stopped short of the hole's bottom so chips can clear instead of packing against it.

Car reamers are typically machined from high-speed steel (HSS) for durability and heat resistance, often with a coating such as black oxide or a specialty finish to extend tool life.

Car reamers come with either a 3-flat shank for standard drill chucks or a hex impact shank for use with pneumatic or electric impact wrenches.