Can you use these on a angle driver?

I suppose you could with the right adaptor but I think they’re better suited for use on an angle grinder with higher rpms.

¿ Is this a good to grind cast aluminum ?

It works well if you use a cutting wax to keep the aluminum from clumping or clogging. Cut-ez is a good one.

Are any of the resin discs available with a5/8 inch hole for a 5/8" arbor?

Since a 5/8" arbor is smaller than the 7/8" hole, these discs can fit over the 5/8" arbor and fasten with the locking nut of your grinder. In other words, you will be able to use these discs even with a grinder that has a 5/8" diameter arbor.

How do these work for grinding welds?

These work great for metal and wood. I’ve used them on steel welds, these last longer than any disc I’ve ever used. I highly recommend them.

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BHA 5" x7/8" Zirconia Resin Fiber Discs, 36 Grit - 25 Pack | 36-grit Zirconia resin fiber discs for aggressive stock removal on steel & stainless; angle-grinder discs, cool-cutting

Product ID: 69147537

Details

Brand
BHA
Compatible Devices
Angle Grinder
Grit Material
Zirconia
Grit Type
Extra Coarse
Product Dimensions
5"L x 5"W

🔥36 grit zirconia resin for aggressive stock removal

⏱️Max 12,200 RPM for high-speed performance

⚙️5" diameter for versatile grinding

240.48 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Grind smarter, not harder — power through every project with BHA’s zirconia discs!

PRECISION FIT - 5" diameter with 7/8" arbor hole guarantees seamless compatibility with most angle grinders.
BULK PACK ADVANTAGE - 25 discs per pack means you’re always ready to tackle any project without downtime.
UNMATCHED DURABILITY - Zirconia resin fiber ensures long-lasting, aggressive grinding power on steel, stainless, wood, and fiberglass.
HIGH SPEED EFFICIENCY - Rated for up to 12,200 RPM, these discs deliver fast, cool-cutting performance without overheating.
VERSATILE APPLICATION - Perfect for blending welds and smoothing surfaces on both ferrous and non-ferrous metals.

The BHA 5" x 7/8" Zirconia Resin Fiber Discs (36 grit) come in a convenient 25-pack designed for aggressive stock removal on steel, stainless steel, wood, and fiberglass. Engineered for angle grinders with a 7/8" arbor hole, these discs operate at speeds up to 12,200 RPM, delivering durable, cool-cutting performance ideal for weld blending and surface preparation.

Specifications

ASIN	B06VVN9B4X
Best Sellers Rank	#29,992 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #6 in Power Sander Fiber Backed Abrasive Discs
Brand Name	BHA
Compatible Devices	Angle Grinder
Compatible Material	Wood
Construction Type	Grinding
Customer Reviews	4.5 4.5 out of 5 stars (155)
Grit Material Type	Zirconia
Grit Number	36
Grit Type	Extra Coarse
Industry Standard Identifier	Backing Pad
Item Diameter	5 inches
Item Dimensions	5.5 x 5.5 x 2 inches
Item Dimensions L x W	5"L x 5"W
Item Thickness	0.88 inches
Item Weight	1.5 pounds
Manufacturer	BHA
Material Type	Zirconia
Maximum Rotational Speed	12200 rpm
Model	RZ50036-25
Number of Items	25
Part Number	RZ50036-25
Recommended Uses For Product	Grinding
Set Name	Pack of 25
UPC	742889950662
Unit Count	25 Count

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