will it work on a hitachi 4 1/2” grinder?

I don’t know about the Hitachi 4 1/2 , but it works on a Bosch 5 “ and a Makita 7” most likely it will work on the Hitachi. I had to purchase a universal nut with centering washer at Home Depot or Lowe’s

Is this disc compatible with a galaxia angle grinder?

Yes, it will work. It comes with a bushing to fit a five-eights arbor. Make sure the disc isn't touching the gaurd before turning on your tool. If it does touch, remove the gaurd. These tools can be dangerous, use a full face mask, clamp your wood firmly to a stable surface, and hold the grinder firmly with two hands. It's a great tool once you get used to it. I prefer these to the expensive arbortech planers.

Will this sharpen a carbide tip

NO, this tool is for wood sculpting, for carbide tips, see, on amazon,3 Inch Flat Shape Diamond Grinding Wheel 150 Grit 1/2" Bore for Grinder Cutter Grinding Metal Hard Alloy Glass Tiles Ceramics (78x12.7x10x10mm) $20.00 plus shipping

Are these compatible w/ a Dewalt die grinder?

The Shaping Wheels will fit most Dewalt '4-1/2" Angle Grinders', however the Kutzall 1/4" Shaft Burrs will fit most Dewalt Die Grinders.

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Extreme Shaping Disc - Coarse, 4-1⁄2" (114.3mm) Diameter X 7⁄8" (22.2mm) Bore - Woodworking Angle Grinder Attachment for DeWalt, Bosch, Milwaukee. Abrasive Tungsten Carbide, SD412X90

Product ID: 35390780

Details

Brand
Kutzall
Compatible Devices
Angle Grinder
Grit Material
Carbide
Grit Type
Coarse
Product Dimensions
4.5"L x 4.5"W

⚡Rapid material removal

🔄Versatile multi-material shaping

🛠️Tungsten carbide durability

$162.65

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Description

⚡ Shape smarter, not harder – dominate your projects with Kutzall Extreme!

BUILT TO OUTLAST - Tungsten-carbide teeth last 100X longer than conventional abrasives 🛠️
EFFORTLESS CONTROL - Smooth cutting action with grain or against for precision shaping 🔄
UNIVERSAL COMPATIBILITY - Fits DeWalt, Bosch, Milwaukee & more – your go-to angle grinder upgrade 🔧
BLAZING FAST MATERIAL REMOVAL - Cut through wood, fiberglass, and composites with unmatched speed ⚡
MADE IN THE USA TRUSTED WORLDWIDE - 60+ years of craftsmanship powering pros and artisans alike 🇺🇸

The Kutzall Extreme Shaping Disc is a 4.5-inch coarse tungsten carbide abrasive wheel designed for rapid, precise shaping of non-metallic materials. Compatible with major angle grinders like DeWalt and Bosch, it offers exceptional durability—outlasting conventional discs by 100X—and smooth cutting control for wood, fiberglass, foam, and more. Handcrafted in the USA with over 60 years of expertise, it’s the professional’s choice for aggressive material removal and versatile shaping tasks.

Specifications

ASIN	B01IU8AK4O
Best Sellers Rank	#93,691 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #30 in Power Sander Fiber Backed Abrasive Discs
Brand	Kutzall
Brand Name	Kutzall
Compatible Devices	Angle Grinder
Compatible Disc Grinder Tool Models	Makita 9558PB
Compatible Material	Non-metallic
Construction Type	Hybrid
Customer Reviews	4.7 out of 5 stars 533 Reviews
Grit Material	Carbide
Grit Material Type	Carbide
Grit Number	80
Grit Type	Coarse
Industry Standard Identifier	SD412X90
Item Dimensions	1 x 6 x 7 inches
Item Dimensions L x W	4.5"L x 4.5"W
Item Thickness	22.2 millimeters
Item Weight	8 ounces
Manufacturer	Kutzall
Material Type	Extreme - Coarse
Maximum Rotational Speed	15000 rpm
Model	SD412X90-CAN
Number of Items	1
Part Number	SD412X90
Product Dimensions	4.5"L x 4.5"W
Recommended Uses For Product	Cutting
UPC	723434325999 818050020110

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