Anybody know the number(s) of the thickest (most heavy duty) dremel type cutoff wheel(s) are? Even the shorter diameter ones.

Hello, The thickest cut-off wheel we provide is .0625 (1.6 mm) and is part #540. The next thickest would be part numbers 426,456,506CU,EZ426,EZ456 and EZ476. These are all .045 thickness (1.1 mm). Hope this helps and have a great day!

Can it be used for cutting plywood, does it leave clean edges?

You can cut plywood. I do so when cutting model airplane parts from 1/16 - 1/4" birch plywood. To prevent 'fraying' around your cuts, first lay down masking tape over your projected cut line.

Do these have a longer life or more durable than the Dremel #426 fiberglass reinforced cut offwheels . I usually use for cutting small screws and bolt

The 426 will be more durable and have a longer life. That is what the fiberglass does.

What diameter size are these cut off wheels and can it be used for a drill Master rotary tool?

There15/16” diameter.. 25 thousandths “ thick.. 1/8” hole in center.. any high speed cut off tool these will work.. the 409 are THIN.. 406 ate a bit thicker.

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Description

🔧 Cut with confidence, finish like a pro!

5 PACK CONVENIENCE - Always have a fresh wheel ready to tackle your next project without downtime.
PRECISION EDGE CUTTING - Engineered for razor-sharp, clean cuts on metal, wood, and ceramics.
VERSATILE MULTI MATERIAL USE - Seamlessly cuts bolts, screws, castings, and more with ease.
FIBERGLASS REINFORCED STRENGTH - Built tough to resist breakage and extend wheel life under heavy use.
COMPACT 1 8 SHANK COMPATIBILITY - Fits most rotary tools for instant upgrade to a cutting powerhouse.

The Dremel 426 Cut-Off Wheels are fiberglass-reinforced, 1.25-inch diameter discs with a thin 0.045-inch cutting edge, designed for precision cutting, grooving, and trimming across metals, wood, and ceramics. Compatible with rotary tools featuring a 1/8-inch shank, these durable wheels come in a convenient 5-pack, delivering reliable performance for professionals and DIYers alike.

Specifications

Grit Material	Aluminum Oxide
Product Dimensions	8.1"L x 4.4"W
Brand	Dremel
Compatible Devices	Various rotary tools, Mandrels FOM1 or FOM6
Grit Type	Medium
Item Thickness	1.2 Inches
Grit Number	180
Construction Type	Cut-off Wheels
Global Trade Identification Number	00080596004262
UPC	080596004262
Manufacturer	Dremel
Part Number	426
Item Weight	0.064 ounces
Item model number	426
Is Discontinued By Manufacturer	No
Size	5-Piece
Color	Black
Style	Multi-Material Cutting
Material	Plastic
Pattern	Cut-Off Wheel - Fiberglass Reinforced
Shape	Shape
Power Source	Hand Powered
Item Package Quantity	5
Number Of Pieces	5
Cutting Diameter	32 Millimeters
Measurement System	inch
Usage	specific_uses_for_product
Included Components	Fiberglass Reinforced Cut-Off Wheels
Batteries Included?	No
Batteries Required?	No
Warranty Description	Warranty
Assembled Diameter	32 Millimeters
National Stock Number	5130-01-293-1275

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