The Faithfull HSS taper drills are used for drilling sheet materials. They will drill a hole of any diameter between the stated sizes. Use of a cutting fluid is advisable with this drill. Please Note: Size guide image relates to standard sizes only. Brand sizes may vary. Please Note: Group images are not representative of quantity sold. Pack quantity is listed above. This product is usually dispatched within 2 working days. Dispatch times can be viewed in the Postage and Payments section of the listing. Delivery is usually completed in 3-5 working days within the Us.