RAM 1" Ball Handlebar Mount with U-Bolt and Square AMPS Base

Features: Zinc coated u-bolt base with 1" ball - Includes hardware to fit rails from 0.50" to 1.25" in diameter Standard size (medium) double socket arm - overall length: 3.73"; socket to socket: 3" Square 2" x 1.7" base with 1" ball and four pre-drilled holes at each corner: 1.181" x 1.496" Constructed of powder-coated marine-grade aluminum Holds up to 2 lbs. Made in the USA Included Hardware: (1) 1/4"-20 U-Bolt for .5" - 1" Rails (1) 1/4"-20 U-Bolt for 1" - 1.25" Rails (2) 1/4"-20 Nylock Nuts (2) Rubber Caps (1) U-Bolt Spacer Compatible Devices:(partial list)Garmin GPSMAP 276Cx zumo 390LM zumo 396 LMT-S zumo 400 zumo 450 zumo 500 zumo 550 zumo 590 zumo 595LM zumo 660 zumo 665 zumo XT Magellan TRX7 TRX7 CS Road Tech Zumo 590 Tech Zumo 660 Tech Zumo 665 TomTom Rider 2 Urban Rider Trail Tech Voyager Pro Tech Voyager Pro Brand: RAM MountsPart number: RAM-B-149Z-347UWarranty: Manufacturer's lifetime warranty