Features: Universal consistency meets durability in this vertical mount adapters, featuring 1/4" 20 to 17mm ball head conversion for multiple device stability with hard plastic construction. precisions engineered 9cm plastic adapters enables 360 angle adjustment and secure locking between tripods, grip mounts, and 17mm ball compatible phone/tablet holders. Essential for content creators, drives needing car mounts, and photographers requiring flexible camera/phone setups across multiple devices. Seamlessly integrates with dashboards camera , vloggings tripods, desktop tablet stands, and action camera rigs for stabilizes shootings in vehicle , studios, or outdoor environment. double functionality as extension rod and angle adjustable rotate solves mounting challenge across magnetic phone holders, monitor arms, and DSLR fast release systems. Specifications: Material: Plastic Size: 9cm/3.5inch in total length, 17mm/0.7inch in diameter of ball head Thread: 1/4 Package Includes: 1xBall Head adapters note: Please allow 1 to 3cm error due to manual measurement, please make sure you not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.