I have used these bits on a router with excellent results. They make clean cuts and remove chips well. They are far superior to straight cutters with two flutes. I think they will outlive Kutter too. They don't seem to get very hot.
Multitool pliers GANZO G202 black
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Universal tool set 151 items 1/2" -1/4" BG151-1214
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Wi-Fi router Keenetic Extra (KN-1713), white/grey
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πͺ Bi-Metal Cutting Blades: Imachinist S933414 - Enhancing Precision and Performance