Here is the K8 Pro keycap layout and size chart overview. The keycap is designed for the Keychron K8 Pro keyboard.

Different rows on the keyboard have different heights and slope profiles and Keychron K8 Pro keycap uses OSA profile (OEM profile with spherical-angle) with MX style. Therefore the K8 Pro keyboard is compatible with other OEM profile keycaps in the market.  

ANSI Layout

ISO Layout