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 Pro 66008 1/8-Inch To 3/4-Inch Sae Hollow Punch Set

Product ID: 148439688

Details

Brand
Mayhew
Colour
Black Blue
Hole count
1
Item weight
0.01 Pounds
Material
Alloy Steel

🔩Dual cutting heads for concentric circles

⚙️11 precision punch sizes

🛠️Durable alloy steel with black oxide finish

¥64193

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

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Description

🛠️ Punch Perfect Gaskets Like a Pro—No More Waiting, Just Winning!

BUILT TO LAST - Crafted from rugged alloy steel with a corrosion-resistant black oxide finish for enduring performance.
TRUSTED BY PROS - Highly rated by craftsmen who rely on it for quick, clean gasket fabrication—never wait on parts again.
COMPACT ORGANIZED - Comes in a sleek plastic case to keep your punches neatly stored and ready for action.
ONE STRIKE PERFECTION - Dual cutting heads enable flawless concentric circles in a single hammer blow—save time and effort.
PRECISION IN EVERY PUNCH - 11 versatile sizes from 1/8" to 3/4" SAE cover all your gasket needs with exacting accuracy.

The Mayhew Pro 66008 Hollow Punch Set features 11 precision alloy steel punches ranging from 1/8" to 3/4" SAE sizes, equipped with dual cutting heads for efficient concentric hole punching. Finished in durable black oxide and housed in a compact plastic case, this manual tool is ideal for creating clean gaskets and washers in soft materials like leather, vinyl, and light sheet metal. Praised for sharpness retention and professional-grade reliability, it’s a must-have for DIYers and pros alike.

Specifications

ASIN	B002GKGSA8
Best Sellers Rank	840,839 in DIY & Tools ( See Top 100 in DIY & Tools )
Brand	Mayhew
Colour	Black,Blue
Customer Reviews	4.9 4.9 out of 5 stars (79)
Global Trade Identification Number	00045256660080
Hole Count	1
Item Weight	0.01 Pounds
Manufacturer	Mayhew
Manufacturer Part Number	66008
Material	Alloy Steel, Plastic
Model Number	66008
Number of Items	1
Operation Mode	Manual
Pin Hole Diameter	0.13 Inches
Sheet Count	11
UPC	045256660080 785533926156 779975299169
Unit Count	11.0 count

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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

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Fantastic experience overall. Will recommend to friends and family.

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Received my product in pristine condition. Great service overall.

1 month ago

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¥64193

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

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

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