This pack of 10 Trend replacement drill bits is designed for use with the Trend Snappy CS 6 countersink. The drill bits are 3/32 inch (2.38 mm) in diameter and 60 mm in length. They are suitable for piloting work in softwoods, aiding screwdriving and preventing splitting near edges. The durable HSS drill bits can be used on metals, alloys, plastics, and all timber applications. They are supplied in a storage tube for protection and easy transportation. Please note that the supplier provides header card in a plastic bag, not a tube.