Designed to keep water bottles in tight spaces. Due to the unique fastening mechanism, the screws can be installed first and then the bottle holder. The included screws and washers protect the plastic bottle holder from excessive tightening torques. Material: fibreglass composite outer diameter: suitable for standard drinking bottles. Features: metal eyelets. Dimensions: 14.6 x 8.1 x 7.8 cm. Weight: 53 g