DEWALT DW8062B5 4-1/2-Inch by 0.045-Inch Metal and Stainless Cutting Wheel, 7/8-Inch Arbor, 5-Pack – Amazon $2.99

This are highly durable. Max rpm : 13300
Thin .045-Inch wheel design for fast burr free cutting
Proprietary aluminum oxide grain combination for aggressive cutting action
Proprietary material mix ensures durable long life wheels
2 full sheets of fiberglass for durability and safety
Fast burr free cutting
https://www.amazon.com/DEWALT-Cut…B005B8LZCI
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