Features: The new arm support plate adopts a more reasonable and stable structure, and concentrates on solving the problem of neck and shoulder pain caused by long compatible with time work of users and hanging arm! Double K-shaped support frame, dual clamps are locked on the desktop, making the product more fit and stable on the desktop! Folding design,it is convenient compatible with users to fold and store at 90when they are not needed, and does not take up your space! Erect a healthy sitting posture and bid farewell to soreness. Give yourself a healthy body at the least cost. Safe and reliable ergonmic design, hole free installation Specifications: Size: approx 35x15cm/13.78x5.9in Color: Black / White Material:Medium Density Fiberboard Features: Foldable; Hole Free Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind becompatible withe you bid. Package includes: 1 Set x Desk Extender Bracket