Ball Head Size: :25mm(M8), 25mm(M10) Material: :Rubber+stainless steel Thread Length: :11mm(M8), 11mm(M10) Pitch: :1.25mm(M8), 1.25mm(M10) Bottom Diameter: :8mm(M8), 10mm(M10) Total Length: :52mm(M8), 52mm(M10) Thread Direction: :clockwise Packing Size: :10.8x6.7x2.6 cm Net Weight: :36g(M8), 45g(M10) Package Includes: :1 x Rail Mount Description: *1. Material: Rubber+stainless steel *2. Ball Head Size: 25mm(M8), 25mm(M10) *3. Thread Length: 11mm(M8), 11mm(M10) *4. Pitch: 1.25mm(M8), 1.25mm(M10) *5. Bottom Diameter: 8mm(M8), 10mm(M10) *6. Total Length: 52mm(M8), 52mm(M10) *7. Thread Direction: clockwise *8. Packing Size: 10.8x6.7x2.6 cm *9. Net Weight: 36g(M8), 45g(M10) Features: *1. The bottom diameter of the product design is 8mm or 10mm, and the ball head diameter is 25mm, which is suitable for most models and brackets and is widely used to fix phone holders and sports cams *2. The ball head of the product is made of rubber, and the screw is made of stainless steel, which is durable and elegant in appearance *3. The screw of the product has a thread that can directly install the original rearview mirror or the position with screw holes, and the installation is convenient and quick Package Includes: 1 x Rail Mount Note: 1.Allpictureshavebeenprofessionallycalibrated,butduetotheambientlightanddifferentdisplaydevicesettings,thepicturesanditemsyouseemayhavesomedeviations,pleaseforgiveme. 2.Thedataismanuallymeasured,theremaybesomedeviations,butitdoesnotaffecttheuse.