Rarity level 8/10❗️Authentic LEGO Bionicle exclusive White metal Krana Kal promo piece, also called WMKK. They're almost impossible to find these days and only 5000 have been produced + around 100 spares! :
Vintage Lego Bionicle Krana Mask-Set de 12 Máscara /Fuera de - Etsy España
LEGO Bionicle MOCs: Krana-possessed Matorans
Amazing LEGO Collections: 144 Bohrok Krana / Kal masks including rare White Metal Krana-Kal
Lego Bionicle Krana (Set of 12), Hobbies & Toys, Toys & Games on Carousell
LEGO Bionicle MOCs: Krana-possessed Matorans
Lehvak | BIONICLE Wiki | Fandom
Lego Bionicle set completo de Krana-Verde | eBay
LEGO Bionicle 8598 Kanohi Nuva & Krana Pack
LEGO Flat Dark Gold Bionicle Krana Mask Za | Brick Owl - LEGO Marketplace