CM032-ST-2+AP2TGN: Bicycle Mount Pedestal with Swivel Head for Garmin Nuvi 200, 250, 270, 300, 310, 370, 600, 610, 650, 670, 680 and StreetPilot Designed for use with bicycles Installs easily without tools Compatible with handlebars from 0.75" to 1" in diameter Can be used on helicopter yokes, too Compatible with ALL Garmin Nuvi portable navigation devices including: Nuvi 200, 250, 270, 300, 310, 370, 600, 610, 650, 670, 680.