... ISO3327)Grain sizeRecommended ApplicationsJT106UK05-K106%94.014.7537000.4-0.5suitable for machining aluminum -magnesium alloys,glass fiber,carbon ... mining tools and reamers.JT302AK20-K3010%91.814.4538000.7-0.9suitable for machining aluminum -magnesium alloys,glass fiber,carbon ... drills of other materialsJT401K30-K4012%92.014.1538000.5-0.7suitable for machining nickel steel,based alloys, titaniumalloys, ...