Features:brand new and high qualityIt is double-ended automatic wrench with magnetic damping adjustment structure on one side The blade is made of carbon fiber composite material, which is strong and durable.The wrench is CNC-machined from stainless steel, brass and aluminum alloy composite materials, and the surfaces is sandblasted and anodized.The contacts are made of sterling silver, and the contact is reliable.3.5mm audio interface with connecting cable.Exquisite workmanship high efficiency stable working performance. Specifications:Material:MetalColor:Red/Blue/Black/SilverSize:Approx.80x80mm/3.15x3.15inches Note:1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1 Set Morse Keyer