BLACK FLAT THICK NEOPRENE RUBBER WASHERS - M3 M4 M5 M6 M8 M10 M12 M16 M20

M16 - Outer:30.0mm Inner:16.9mm Thickness:3.0mm. M8 - Outer:16.9mm Inner:8.5mm Thickness:1.6mm. M12 - Outer:23.9mm Inner:13.0mm Thickness:2.5mm. M10 - Outer:20.9mm Inner:10.5mm Thickness:2.0mm. M4 - Outer:9mm Inner:4.4mm Thickness:0.8mm.