Note: All data are measured manually, and there are certain errors in the measurement results. specification: Item Type: Stroller Cup Holder_x000D_Material: ABS, Silicone_x000D_Applicable Size: Approx. 8.5cm/3.3in Diameter or Less Water Cup_x000D_Suitable for Tube Diameter: Approx. 2?4.5cm/0.8-1.8in Features: 1INSTALLATION OBJECT: Stroller cup holder is suitable for many objects with bars, can be used for baby carriage, wheelchair, bike, motorcycle, scooter, lawn mower, beach bike, treadmill, etc. 2COMPATIBLE OBJECTS: Stroller water bottle holder is suitable for water cups up to 8.5cm in diameter, for baby bottles, water bottles, coffee cups, beverage bottles, etc. 3WITH CLIP: Stroller drink holderwith clip, suitable for pipe diameter 2?4.5cm, the clip can be firmly clamped on the stroller bar to avoid sliding. 4360 DEGREE ROTATION: Wheelchair cup holder can be rotated 360 degrees, so it can be installed at different angles according to your needs. 5EASY TO INSTALL: Baby carriage cup holder is easy to install, rotate and loosen the knob to install on the bar, and then rotate and tighten the knob. PackageList: 1 x StrollerCupHolder