Fine Material: The taillight bracket is designed and made with fine plastic, which is not easy to break. Fits Seatpost: Please kindly note before buying that the tail light holder needs to be used with seatpost of 31.6mm 30.8mm and 27.2mm. Compatibility: The taillight bracket is specially designed and made to be the replacement for Garmin Varia. Wide Use: The taillight bracket can be used to hold sport cameras and etc when there is no tail light needed. Fine Replacement: The taillight bracket can be regarded as a fine replacement choice when you need to replace the old one. Size: Approx. 65x48x26mm/2.56x1.89x1.02inch. Compatibility: Replacement for Garmin Varia Colour:black Material:plastic Package Contents: 1 x Bike Tail Light Saddle Seat Only the above package content, other products are not included. 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.