Features: brand new and high quality BT jitter value (Bouncing Test): The BT jitter value is the physical property of the mechanical switch. The larger the jitter value, the easier it is to issue an error signal, resulting in a double click. Based on the optimized internal structure, Kaihua for GM micro-switch adopts 24K gold contact and grid-like contact method, and has made a breakthrough process for the reed, a series of improvements, which effectively slow down the switch at high frequency. The wear of the contacts caused by the strength tapping keeps the mouse function highly flexible for a long for time. At the same for time, the use of 24K gold improves the conductivity of the switch and the ability to resist oxidation and environmental corrosion. CR value (hand for touch rate) : The CR value is a parameter value that measures the feel of a button from the stroke and the velocity. Its calculation formula is CR=(OF-CF)/OF, (OF-Operation Force operating pressure, CF-Contact Force trigger pressure), according to research, one The feel of the fine micro switch, its CR value range will be controlled at 15% -35%, and the Kaihua for GM micro-switch, through continuous improvement and testing, and finally stabilize the CR value of about 25%. The handle is crisp, the rebound strength is uniform, and there is no hysteresis. Life: 60 million times click Material and structure: 24K gold contacts and grid-like contact. Normal strength, crisp hand-free, uniform springback and no hysteresis. Specifications: Normal strength, crisp hand-free, uniform springback and no hysteresis. Life: 60 Million times Click Material and structure: 24K gold contacts and grid-like contact. Quantity: 2PCS Material: Plastic Packing Size:approx 5x5cm/1.97x1.97in Package Includes: 2 x Original Kailh for GM Mouse Micro Switches (Without retail package) note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-2mm error due to manual measurment.