Technical Specifications: Material: PBT Height:R4/ESC height(suitable for replacing R4 or ESC key) Color: Red Printing: Non printing, Blank Fittment: Fit for most brand keyboard. Size: 18mm x 18mm Features and Benefits: ● Features a row 4 (R4) profile designed for the top row of your keyboard. ● PBT material characteristic: Can Survive up to 150*C (or more in some cases) ● Resistant to solvents. ● Mechanically Strong. ● Does not shine as fast. ● High toughness,good fatigue resistance ● It will give you the cool feeling when you use. Installation Instructions: Using a wired key puller tool (not included), gently place both sides of the tool underneath the key you wish to remove. With both sides underneath the key, gently begin pulling upwards while wiggling the key side to side at the same time. Make sure you do this in a smooth motion or else you may cause damage to your keyboards mechanical switches. Notice: 1. The color may have different as the difference display,pls understand. 2. It's only keycaps. don't contain keyboard.