Features: brand new and high quality The PTB keycap has stable molecular structure, corrosion resistances, and high heat resistances. It is not easy to be oiled after long-term use, and the initial state is maintained for a long-time. It adopts the high and low keys layout, which adapts to the movement arc-of human hand tapping, and feels comfortable. Ergonomically designed. The characters and patterns of the keycaps bright in color, not easy to wear, and the letters are clear and not faded. The keycap adopts frosted technology, which makes it more comfortable to fit the fingers. Not easy to oil, not easy to stick to the hand, comfortable to thetouch, and the overall appearance is more textured. Specifications: Material:PBT Size:Approx.35x15x2cm/13.78x5.9x0.78 inches Package Includes: 1 Set 135 Keys Keycap 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.