Hardness: HRC46-48;
Precision: 0.005mm/0.008mm;
Process for subzero treatment and thermal aging treatment, improve the precision and stability of size;
Inner hole grinding for many times, can reach Ra0.4, mirror effect;
Normal processing, collet more clean, bright and beautiful;
Surface do coating processing treatment, improve the surface hardness, wear resistance, improve the cleanliness, precision is more stable, more smooth surface, anti-rust, anti-corrosion effect is better, feel more comfortable, more beautiful appearance.
