... '' hole reamer bit 2.Type:Milled tooth & TCI 3.IADC:116,517,537,617 hole reamer bit size to 50inch Rock Bit- hole reamer bit 1.Type:TCI & Milled ... Milled tooth:116,117,126,127,136,137,216,217. TCI:417,437,517,527,537,547,617,637,737.Products ...