M2 M2.5 M3 M4 Plastic Nylon Hex Standoff Spacer Phillips Pan Head Screw Bolt Nut | eBay
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PATIKIL M8 Aluminum Spacers,10Pcs Metal Spacer Aluminum Round 8.2mm ID x 16mm OD x 10mm L Thickness Aluminum Spacer Screw Standoff for 5/16" or M8 Screw Bolts : Amazon.co.uk: DIY & Tools