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4309 carbide tipped hole products are offered for sale by suppliers on Alibaba.com, of which drill bits accounts for 53%, cemented carbide accounts for 4%, and tool parts accounts for 1%. A wide variety of carbide tipped hole options are available to you, such as oem, odm and obm.You can also choose from metal drill, drilling hole carbide tipped hole,as well as from black, gold, and red carbide tipped hole, and whether carbide tipped hole is plain, black oxide, or zinc.