M3 WING BUTTERFLY NUTS TO FIT BOLTS SCREWS BZP GRD 4 DIN 315. M2 M2.5 M3 M4 M5 ALLEN KEY GRUB SCREWS CUP POINT SCREWS A2 STAINLESS DIN 916. Wing Nuts consist of two large ?., which are designed to make it easy to install without the use of tools.
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