โ†‘ER ์ฝœ๋ฆฟ 1/8 1/4 1/2, ๊ณ ์ •๋ฐ€ CNC ๋ฐ€๋ง ๊ณต๊ตฌ, ER8 ER11 ER16 ER20 ER25 ER32, 3.175mm, 6.35mm, 12.7mm, 0.008mm - TopDealBox