Desk arm support covered with thick cloth cushion with high density foam, super soft and comfortable to fit your skin. using stainless steel double k type support frame, very strong and durable Foldable and Rotatable: This computer desk extender tray is designed to fold and rotate, moving with it when in use, and 90 folded for storage when not needed, perpendicular to the desktop, will not take up your space, left and right hand adaptability, effectively relieving shoulder and arm pressure Desk corner extender can be adapted to the thickness of up to 2.36 inches of desktop, suitable for most tables. relieves shoulder pain caused by sagging elbows, supports arms and reduces wrist pressure Desk extender tray, 180 rotation, you can choose the most comfortable angle for yourself, the correct sitting posture and protection of the wrist, to prevent myopia and whiplash, improve working conditions This arm rest for desk requires no installation parts, just lock the armrest on the edge of the desk and tighten it. and the desktop mounting parts are equipped with rubber pads, no need for mounting holes, will not scratch your desk,(not suitable for curved desks, beveled edges, desks with drawers, raised edges, rounded table edges) Note: Desk arm rest does not fit round table edge, curved table edge, tilted table edge table, glass table, the clip is used within 2.36 inch(6cm). please buy according to the demand. Color: Black, Silver Material: ABS, Stainless Steel, Sponge Package Size: 28cm x 15cm x 8cm (11.02in x 5.905in x 3.14in) Weight: 0.73kg (1.60lb) Note: 1. The table armrest is not suitable for round table edge, curved table edge, tilted table edge table, glass table, and the clip is within 2.36 inches(6cm). Please purchase according to your needs. 2. Please allow slight color differences due to light and screen settings. 3. Please allow slight size differences due to manual measurement.What's in the box 1 x Computer Desk Mouse Armrest Support Holder