For over 22 years, Aero Lock Service has provided the McHenry County, IL, area with full locksmith service and high security restricted key systems. Our licensed, bonded and insured company offers residential, commercial and industrial services, including free estimates. You can count our on experts, all of whom are background screened, are available for emergency house and car openings. Turn to Aero for locksmith services such as: Door closers Masterkeying Dead bolts Rekeying Lock-outs Panic devices High security & restricted key systems Aero Lock Service is ready to help, whenever you need us, with flat rates and honest, up-front pricing. Call us today!