Awesome, this is great to see. I’ve been using this exclusively in aluminum and love them a ton. I highly recommend soaking them in a mild sodium hydroxide (lye) solution or alkaline cleaner to remove aluminum buildup you will see on them over time as a gray coating. This is not the ZrN coating wearing off but instead aluminum building up. The ZrN coating is super strong and durable!
Thanks @robgrz. The product details don’t highlight if these come in a pack (of 2) like the #201Z or #102Z. Does that mean these are single endmills being sold?