Review on McGard 74039 Marine Propeller Thread by Rashid Summers

This product was very easy to install and I hope it will prevent my very expensive stainless steel screw from being stolen. If you want to order an extra key, don't worry about the postage in an envelope. Simply call customer service at (800) 444-5847, the number is listed on the documentation that came with the product. You can check in and order anything you want (new locks, new keys) directly over the phone with your credit card.