Fibula piece

Fibula pieces are obtained as a drop from wallasalkis, found underneath Waterbirth Island. Along with a skull piece, a ribcage piece, 6 dagannoth hides, and 22,500 coins, a fibula piece can be traded to Peer the Seer for full skeletal armour. The fibula piece, alone along with 2 hides and 7,500 coins, can be traded for skeletal bottoms.