The tube mount allows you to mount your handheld Garmin GPS on your bike.

Fits to:

eTrex 20, 20x, 30, 30x, 32x

eTrex Touch 25, 35,

GPSMAP 62, 62s, 62sc, 64, 64s, 64st, 64sx, 64x, 66i, 66s, 66st

Oregon 300, 400t, 450t, 550t, 600, 600t, 650, 650t, 700, 750, 750t

As well as many more.