Applicable: Suitable for 31.8 mm diameter guideSuitable for garmin 1000, 820, 810, 800, 520, 510, 500, 200; for Bryson r530, r330, r310, r210, r200, r100 for Cateye complete cycle computer series.Camera support: for gopro complete color palette, Sony HDR as 50/as 200v, sargo SJ 4000, yi camera, aee sports camera series; All series presents lamp holdersfor Gopro mount conversion and light holder colour: black Size: 130x56x40mm Package Contents: 1 x Bike Computer Mount HolderOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.