Tt eSPORTS Keyboard Metal Caps QWER+ESC (EA-MTC-AKCSIL-QW) Zinc alloy The METALCAPS are made of a Zinc alloy for overall durability and a solid feel while typing. Anodized and UV Coated. The METALCAPS are anodized and UV coated to protect the finish over long use. Comes in 4 varieties. The METALCAPS are offered in 5-key or 38-key packs, in the following combinations: