YG-1ジャパン钴直钻コバルトストレートドリル HSS-Co8 2.0, HSS-Co8 2.3, HSS-Co8 2.4,HSS-Co8 2.5,HSS-Co8 2.6,HSS-Co8 2.7,HSS-Co8 2.8,HSS-Co8 2.9,HSS-Co8 3.0,HSS-Co8 3.1,HSS-Co8 3.2,HSS-Co8 3.3,HSS-Co8 3.4,HSS-Co8 3.5,HSS-Co8 3.6,HSS-Co8 3.7,HSS-Co8 3.8,HSS-Co8 4.0,HSS-Co8 4.1,HSS-Co8 4.2,HSS-Co8 4.3,HSS-Co8 4.4,HSS-Co8 4.5,HSS-Co8 4.6,HSS-Co8 4.8,HSS-Co8 5.0,HSS-Co8 5.1,HSS-Co8 5.2,HSS-Co8 5.5,HSS-Co8 6.0,HSS-Co8 6.2,HSS-Co8 6.5,HSS-Co8 7.1,HSS-Co8 7.5,HSS-Co8 8.0,HSS-Co8 8.1,HSS-Co8 8.5, HSS-Co8 8.6,HSS-Co8 8.7,HSS-Co8 9.0,HSS-Co8 9.7,HSS-Co8 9.8,HSS-Co8 10.0,HSS-Co8 10.5,HSS-Co8 11.0,HSS-Co8 12.0,HSS-Co8 13.0,HSS-Co8 2.2