diff --git a/README.md b/README.md
index 98a9dd4..88eb76c 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,17 @@ The `Mute` key is a rotary encoder that also controlles volume.
 
 - [KLE][kle]
 
+When shopping for keys, you need the following:
+
+- 7x R4 1u
+- 1x R3 1.5u (Tab)
+- 4x R3 1u
+- 1x ISO Enter
+- 1x R2 1.75u (Shift)
+- 4x R2 1u
+- 4x R1 1u
+- 1x R1 2u (Space)
+
 ---
 
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