Features: brand new and high quality. Made of high quality cold rolled steel, more durable. The AMP Angle is 90 degrees. Can protect your amplifier from damage. There are two holes for you to screw,stable the equipment. Specifications: Item Type: Sound Box Protectors Material: Steel Color: Black Size: 3.53.50.1cm/1.381.380.04in (Approx.) Quantity: 1 Set(4Pcs) (other accessories demo in the picture is not included) Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 X Sound Box Protectors (No retail package) 8 X Screws