STUBAI - High alloy tungsten molybdenum high speed steel. This is Stubai's premium range with exotic (to Europe) handles and probably the best grade of HSS used in turning tools.
Single ended multi bore handle with a removable screw on 6 inch extension. Native collet grips 3/4 inch tools. Insertable, step down sleeves for 5/8 inch and 1/2 inch and 5/16 inch tools are available seperately.