Specifications
1.color:silver and black knob2:material:aluminium alloy knob
3.internal diameter:4.0mm knob
the different size
----------------------------------------------------------------------------------------------------------------------------------
the drawing of the knob
---------------------------------------------------------------------------------------------------------------------------------
the CE certificate
---------------------------------------------------------------------------------------------------------------------------------
the package of the knobs
---------------------------------------------------------------------------------------------------------------------------------
the other more knobs
---------------------------------------------------------------------------------------------------------------------------------
our team
---------------------------------------------------------------------------------------------------------------------------------
the good praises of our products
---------------------------------------------------------------------------------------------------------------------------------
we are the gold supplier