Features: 17.4mm ball to 1/4 male/female screw hose, adjustment angle. There are two lengths to choose from, 30 centimeters and 40 centimeters, to meet different needs. 17.4mm ball connection for phone stand, tablets rack, 1/4 interfaces connection for tripods, selfie stick, etc. Quality materials, 1/4 metal hose, 360 degree rotate, easily connect the device to stand, expanding your creative possibilities. Suitable for tripods, tablets clip, mobile phone clip, widely used for live streaming photography, video recording and other scene. Specifications: Material: Plastic+Metal Length: 30cm, 40cm(optional) Type: 17.4mm Ball to 1/4 Male, 17.4mm Ball to 1/4 Female(optional) Length: about 30cm/11.8inch, 40cm/15.7inch Package Includes: 1x 17.4mm Ball to 1/4 Screw Hose note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.