Specification:
Quantity: 16 pcs
Colour: black
Product material: made of high quality plastic material, can be used for a long time.
Product size: 27x12mm/1x0.47inch.

Features:
This product can fit any 17mm ball adapter if the tightening nut is lost.
Easy to use: easy to tighten, high quantity and quality of the product, more convenient as a spare.
Product application: can be used for mobile phone vents, handlebar kits, cameras, DVR cameras, wireless chargers, etc.

Warm tips:
All data are measured manually, please understand if there is any error!