US For Garmin Bracket Extension Computer Mount Holder Accessories Durable GPS
The Screw Hole Distance : Approx. 21mm / 0.8in(The adapter for Garmin, Bryton). C ompatibility : for Garmin, for Bryton, for CATEYE(Optional). Applicable Commo n Screw Type & Length : M3, 6mm / 0.24in(for Garmin, Bryton ), 2pcs included.