ME-CM+STGN+BKT40: i.Trek Cup Holder Mount for Garmin Nuvi 40 40LM Replacement bracket holder for Garmin Nuvi 40 40LM included Replacement bracket has Garmin 17mm ball socket and is compatible with other Garmin Nuvi mounting pedestals Cup Holder Mount base conveniently fits into most standard cup holder openings from 2.5" to 3.25" Not compatible with adjustable or oversized vehicle cup holders Cup holder mount has 3.75" pedestal and Garmin 17mm ball joint (compatible with all Garmin Nuvi brackets)