7.5 to 45mm center distance Mounting screw position (handlebar hole centered, stopwatch stand centered)<br> The matching screw is 304 stainless steel<br> Note:This stopwatch bracket is not equipped with light clips<br> Universal IGPS Blackbird Walker Computer for Dock<br> Compatible with for GARMIN1000, 820, 810, 800, 520, 510, 500, 200<br> supported models:for R530/R330/R310/R100<br> Compatible with all action cameras and light clips compatible with for Mountain Dog, for camera mount<br> Colour:Black<br> Material:6061 aluminum alloy<br> Size:143x36x30mm<br> Package Contents:<br> 1 set * brackets<br> Only the above package content, other products are not included.<br> Note: Light reflection 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.