Bolt and nut protection

Metal Bolt Protecion

size:M12 to M60
Mateical:Al SS
It hard then palst
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Metal Bolt Protecion
Metal Bolt Protecion
Metal Bolt Protecion
Metal Bolt Protecion

This metal bolt and nut caps it is hight uv and firm than plastic;

high temperature 

size:M16 TO M42

materical:AL and SS

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