Features: Smooth operation and smooth input experience. Clear sound eliminates bottom for touch noise paragraph mechanical axle keyboard switch The structure of the axis and switch body are matched. Whether switch is in a free state or triggering the working state, the switch coordination is for always as stable as a rock by TTC double-sided dust-proof wall patented technology . Specifications: Type:Gold Blue TTC for Brother Switch Quantity: 4 PCS Package Size: approx 5x5cm/1.97x1.97in Material: Plastic Switch Type: Linear Mechanical Life: 100Million Click Keyboard Standard: Mini Keyboard Operation Style: Mechanical Style: Standard Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 4 PCS x Linear Switches