I need to use my mayhew 66000 set to make 7/16" id x 3/4" od gaskets. can i buy a 7/16" punch to fit the inner, threaded mount?

Maybe. The 7/16 punch is available separately (I searched for "mayhew 7/16"). Not sure if the 7/16 and 3/4 punches can be used together. It depends on the size range. Punches are in different size ranges depending on where they affix to the punch body. Any punch can be used with one from the next size range up.

If purchased here is the manufacturer warranty valid for defects in materials and workmanship?

Contact the manufacturer, I'm sure they will help you

Does the punch size refer to the diameter of the hole made or the diameter of the discs removed from the hollow punch?

It refers to the size hole it makes

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Mayhew Tools 66000 Hollow Punch, 16-Piece Set, Black

Mayhew Tools 66000 Hollow Punch, 16-Piece Set, Black

Product ID: 14268221

Details

Brand
Mayhew
Color
Multi
Hole Count
1
Item Weight
2 Pounds
Material
Blend

📏16 precise size options

⚙️dual cutting heads for concentric punches

🛠️durable manual operation

1590.98 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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Description

🛠️ Punch Perfect Every Time — Because Precision is Power

TRUSTED LEGACY - Mayhew quality since 1856—trusted by pros and DIYers alike for unmatched reliability
DOUBLE THE IMPACT - Dual cutting heads enable concentric circles in a single strike, saving time and effort
ORGANIZED READY - Comes in a sleek plastic case for easy storage and on-the-go professionalism
PRECISION IN EVERY PUNCH - 16 hollow punch sizes from 1/8" to 1-3/16" for flawless gaskets and washers
VERSATILE MATERIAL MASTERY - Perfect for cloth, vinyl, leather, light sheet metal, and gasket materials

The Mayhew 66000 Hollow Punch Set is a professional-grade 16-piece manual tool kit designed for creating precise holes in softer materials like leather, vinyl, and light sheet metal. Featuring dual cutting heads for concentric punches and a comprehensive range of sizes, it comes neatly organized in a durable plastic case. Trusted by mechanics and craftsmen since 1856, this set combines heritage quality with versatile functionality to elevate your craftsmanship.

Specifications

ASIN	B002GKJ20Q
Best Sellers Rank	#291,283 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #320 in Hole Punches
Brand Name	Mayhew
Color	Multi
Customer Reviews	4.9 4.9 out of 5 stars (131)
Hole Count	1
Included Components	16 PC Hollow Punch Set (SAE)
Item Type Name	16 PC Hollow Punch Set (SAE)
Item Weight	2 Pounds
Manufacturer	Mayhew
Material Type	Blend
Model	66000
Operation Mode	Manual
Part Number	66000
Sheet Count	16
UPC	784497057302 045256660004 779975285728
Unit Count	1.0 Count
Warranty Description	Manufacturer

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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1590.98 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews