first, diameter for 3 to 5 mm of polypropylene plastic pipe, BiGuan wall with silicone oil make the ink non-adhesive BiGuan wall.

Plastic stylus pen and the style of the connector depends on the design of the pen, usually by polypropylene or gather b acetal was made.

 

Second, is nickel silver pen can or stainless steel, if use nickel silver and chromium alloy with high, solid for is more corrosion resistance.

 

Three, tip for soft rubber usually protector, centrifugal must be sealed writing skill, the store when the set of core tip protector, can prevent ink dry up.

 

Four, neutral ink and miles Peter fat: for example: a root length is 118 mm, wall diameter of 3.2 mm standards within the core usually irrigation 0.92 g ink and 0.125 g neutral miles Peter fat.