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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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Mayhew Tools 66008 Hollow Punch Set

Product ID: 14268219

Details

Brand
Mayhew
Color
Black
Hole Count
1
Item Weight
4.54 g
Material
Plastic

📏11 precision sizes from 1/8" to 3/4"

⚙️Dual cutting heads for concentric punches

🛠️Durable plastic case for organized portability

S$306

Duties & taxes included

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Description

🖤 Punch Perfect Circles Like a Pro — Because Details Matter

ONE STRIKE PERFECTION - Dual cutting heads create flawless concentric circles instantly
EFFORTLESS MANUAL OPERATION - Ergonomic design for smooth, controlled punching every time
PRECISION AT YOUR FINGERTIPS - 11 versatile punch sizes cover every project need
TRUSTED LEGACY OF EXCELLENCE - Mayhew’s 160+ years of professional-grade reliability
BUILT TO LAST DESIGNED TO ORGANIZE - Robust plastic case keeps your tools protected and ready

The Mayhew 66008 Hollow Punch Set includes 11 precision punches ranging from 1/8" to 3/4", featuring dual cutting heads for concentric circles and housed in a durable plastic case. Trusted by professionals since 1856, this manual punch set delivers reliable, clean cuts on soft materials like leather, vinyl, and gasket material, backed by an unlimited lifetime warranty.

Specifications

ASIN	B002GKGSA8
Best Sellers Rank	#290,844 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #319 in Hole Punches
Brand Name	Mayhew
Color	Black
Customer Reviews	4.9 4.9 out of 5 stars (131)
Global Trade Identification Number	00045256660080
Hole Count	1
Included Components	11 Hollow punches, handle and case
Item Weight	4.54 g
Manufacturer	Mayhew
Material Type	Plastic
Model	66008
Operation Mode	Manual
Part Number	66008
Sheet Count	11
UPC	045256660080 785533926156 779975299169
Unit Count	1.0 Count
Warranty Description	Unlimited Lifetime Warranty

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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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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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S$306

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered 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 SINGAPORE.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Rajesh P.

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

2 days ago

View all Trustpilot reviews