Send in your ring gear to be machined for your shave kit! Simply mail us your ring gear to 2010 W. McMillan St Tucson, Az. 85705 (do not include pinion gear) and we will return it to you in 2-3 weeks. Return postage is included in price. Email us your full contact information and the gears you will be sending us, we will then send you the invoice for labor and shipping. If there are any questions, please call the office or email us at Support@ballisticfabrication.com.