ITEM: 0.39 Diam, 0.312 Shank Diam, Indexable Thread Mill CARMEX. MANUFACTURER: CARMEX. BRAND: Carmex. MANUFACTURER PART: SR0390K12C. 0.39 Diam, 0.312 Shank Diam, Indexable Thread Mill Takes 1 Insert, 12mm Insert Size, I/E Insert Style, SR Toolholder Style, 5 OAL, Through Coolant (MOQ1, Pkg Qty1)CATEGORIES: Maintenance, Repair and Operational (MRO) Supplies. Indexable Threading. Indexable Thread Mills. N/A. TOTAL RECYCLED CONTENT: 10.00%. POSTCONSUMER RECYCLED CONTENT: 1.00%. KEYWORDS: CarmexIndexable ThreadingIndexable Thread MillsN/AN/A.