Wing screws, thumb screws Unused, but stored at home. OPG With unichrome plating Size: M4 x 8 Quantity: 4 pieces for ¥355 (regular mail) 4 pieces for ¥399 (Yu-packet mini) 6 pieces for ¥399 (regular mail) 6 pieces for ¥443 (Yu-packet mini) 2025. 1. 6 Wing screw, screw bolt Wing screw, thumb screw, M4 x 8, 4 pieces