The aluminum box package, and the needle has passed the inspection of the Bureau of Metrology 100%, and the inspection value is basically at the critical value, such as the weight of 2.5g. The test results are both 2.5g and 2.49-2.51.
Technical Specification:-
Needle Length : 38±1 mm
Needle Diameter : 1.01±0.01 mm
Needle Shank Diameter : 3.2±0.02 mm
Steel Needle Length : 40 to 45mm
Tip Diameter : 0.15 ±0.01 mm
Cone Angle : 8o 40′ to 9o 40′
Concentricity : ≤ 0.2mm
Verticality : ±2o
Quality : 2.5±0.05g
