SK针规|日本SK针规|SK陶瓷针规AA-4B,采用高硬度陶瓷制成的针规.不会生锈.
日本SK陶瓷针规,具体型号有:AA-0B,AA-1A,AA-1B,AA-2A,AA-2B,AA-3A,AA-3B,AA-4A,AA-4B,AA-5A,AA-5B,AA-6A,AA-6B,AA-7A,AA-7B,AA-8A,AA-8B,AA-9A,AA-9B。每间隔0.01mm 1支。
陶瓷,每间隔0.01mm 1支