采用特殊鍛造工藝制作的花紋鋼材料，手工拋磨的外觀，表面花紋清楚優美;框架由精密線切割加工【保證尺寸的精密度，避免手工機尺寸的誤差】線圈采用{zx1}工藝，進口10圈電磁閥，3V啟動6—8V正常工作，運行頻率2500轉，彈跳穩定 ，后座磁力強等優點。 Damascus steel features: 1.Material:Damascus Steel 2.Manual polished surface,clear and beautiful patterns 3.Precision wire cutting frame, Ensure the accuracy size,and avoid the error of manual machine e with a 10 wraps manual winding coil,3V to start 6-8V to work,running frequency of 2500switch/minute 5. Stable bouncing,stable needles,strong magnetic back seat,fine workmanship,beautiful appearance,good touching 6.Unwarming for long time using