Note: This 60 Percent keyset fit most US Layout 61 68 mx switches 60 Percent mechanical keyboards. But different brands maybe have different layout, so some keys may have different sizes. If you are not sure about the keycaps size of your keyboard, you can confirm with us. 61 Keycaps Size and Height(First layer): Tab: 1.5u, R3; Caps Lock: 1.75u, R2; Left Shift: 2.25u, R1; Ctrl,Win,Alt,Menu: 1.25u, R1; Spacebar: 6.25u, R1; Right Shift: 2.75u, R1; Enter: 2.25u, R2; Backspace: 2u, R4; Vertical line: 1.5u, R3; The size of other letters are 1u, the height of the letter is the same as the first keycap in the row of the letter . 16 Keycaps Size and Height(Second layer): Right Shift: 1.75u, R1; Ctrl,Fn,Alt: 1u, R1; PgDn: 1u, R1; PgUp: 1u, R2; Del: 1u, R3; : 1u, R4;