Hello, I got a Corsair K60 RGB Pro for free from my friend. However, it's missing some of the keycaps. Can anyone suggest good replacements? Sorry, I'm kind of new to mechanical keyboards.
Any MX-compatible keycaps will fit on the switch stems.
Keycap widths are measured in units: you want 1u caps for Escape, and the cursor key; 1.5u for Tab, 1.25u for the other three keys on the lower row.
Ideally you want replacements to match the "profile" of the other keys so that sizes and shapes match. I think this board uses OEM profile, but I'm not 100% certain.
A sculpted profile like this one uses different keycap shapes for different rows. For example the Escape keycap should be taller than the cursor keycap.
If you want to replace all of the keycaps with a new set, any MX-compatible set designed for a standard keyboard should work. If you want to see the backlights properly go for a shine-through set.