MAST Pro SMP cartridges needles 20pcs pack.

Needles made by 304L, polished by automated machine.
Complete Ethylene oxide disinfection, disposable single use.
Strict quality and consistency control, Smooth and free of impurities.
Every detail of shell makes extreme comfort.
A Perfectly matches with needles and shell, high-stability, smooth unhindered ink flow.
Advanced visual optimisation tube, key-head shape of the shell side, to the tip, right angels at all four sides, reduce the distortion and refraction of spherical lens.
4 thickened bars ensured the high strength of durability, close to 200 rebound force with toughness.