7.5 to 45mm center distance mounting screw position (handlebar hole centered, stopwatch stand centered). The included screws are 304 stainless steel. Note: This stopwatch bracket is not equipped with light clips. Compatible with Garmin 1000, 820, 810, 800, 520, 510, 500, 200. Supported models: R530, R330, R310, R100. Compatible with all action cameras and light clips. Fits Mountain Dog and standard camera mounts. Color: Black. Material: 6061 aluminum alloy. Size: 143x36x30mm. Package Contents: 1 set brackets. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause slight color variations between the item and the image. Measurement error allowance is +/- 1-3cm.