You’ve got enough rulers, we understand that, which is why we offer the opportunity to have your own collection of rulers treated with our Slip-Free process.  Here’s how:  Say you want three rulers to be treated. Select the 1-3 rulers icon box. Add this to your cart then check out.  Mail us your CLEANED and RESIDUE FREE rulers to us. (we recommend Dawn dish detergent to eliminate any oils from your hands) We treat your rulers and send them back. It’s that easy! Remember that 1,2 or 3 rulers is just $30 total, not each.  4,5 or 6 rulers are $40 total, 7, 8 or 9 rulers are $50 total.  If you are sending more than 9 rulers, call us for a quote. Please allow 10 days for return shipping. For more information, contact OOWHEE! Slip-Free Ruler via this web site or call us at  413-323-1141.