Parameter:
-8 disks x 25 needles (200 needles in total)
-Handle color: white,black,transparent,etc
-Roller color: red / purple/green/blue/yellow
-Needle material: Stainless steel/titanium
-Handle/Roller Material: PC+ABS
-High sealing sterilization packaging
-Special a method of construction by lock-up
-50% improvement of needle's strength than a normal material