Discount for A secure handlebar mount for your E-Trex GPS unit. Great for your bike, motorcycle or ATV. H-Series Etrex GPS units do not require the use of the backplate which is included in this package. Fits up to a 1-inch diameter bar. Includes hardware and instructions. A secure handlebar mount for your E-Trex GPS unit. Great for your bike, motorcycle or ATV. H-Series Etrex GPS units do not require the use of the backplate which is included in this package. Fits up to a 1-inch diameter bar. Includes hardware and instructions.