Thank you for your inquiry. We appreciate your questions and comments. DiamondBurs.Net, LLC 4426 Hugh Howell Rd. Suite B-198 Tucker, GA 30084 1-800-853-9403 (Toll Free) 1-678-261-8436 (Outside the US) 706-407-4447 (Fax) Please feel free to call and confirm that we received your fax. We love talking with our customers. All messages will be returned within one business day. info@drillglass.com Visit our other websites: FG and HP Diamond Dental Burs