Wing nut [Small bag set] [Material] Iron ■【Surface Treatment】hexavalent unichrome plating. ■【RoHS】Not compatible with this product. ■【Standard】Please see JIS B 1185. We have a standard of 1 to 4 types of wing nuts. 1 types: Forged processing, cold processing (optional) large handle part, arc-shaped 2 types, forged, cold processing (optional), square handle (as pictured), 3 types of plate press processing. 4 types of die-cast product. We offer 2 types of products. Features: Nut similar to butterfly wings. Can be tightened or loosened by hand. Excellent corrosion and heat resistance. ■ [Uses] Some places you want to repeatedly remove and remove screws without using tools. Used for fastening to damp and outdoor objects Not suitable for use in chlorinated environments or salt near coastal environments. ■ This is a small quantity (pack quantity) pack.