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Amazon.com: Wanyifa Titanium Ti Allen Hex M5 16mm Tapered Head Bolt with Washer Screw for Bicycle Stem Parts Pack of 6 (Black, M5x16mm) : Industrial & Scientific
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PZRT 4pcs Single Hole Clevis Pins 4mm x 40mm 304 Stainless Steel M4 Clevis Pins with Head Positioning Pins Cylindrical Pin Bolt Pin: Amazon.com: Industrial & Scientific
Wera 05003665001 8790 FA 1/4 Zyklop Socket with Hexagon Drive, 4mm: Amazon.com: Tools & Home Improvement