Spika Challenger StickerSpika Challenger Sticker The Sticker knife is the largest specialised blade in the premium Challenger knife range by Spika, and is designed for accomplished pig hunters. It's hardened full tang blade has a black oxide coating and is crafted from 440 steel, with a Rockwell rating of 57 59 c safeguarding durability and consistency in the field. The grip textured linen micarto handle ensures control, joining an oversized hilt protecting the wielder from