Sir 1250 S22 Internal Threading Holder 1-1/4" Round Rh Boring Bar Internal Lay Down Threading Holder For Size 22 Inserts Sir 1250 S22 Internal Threading Holder 1-1/4 Inch Round Right Hand Boring Bar Internal Lay Down Threading Holder For Size 22 Inserts Own Threading Holder For Size 22 Inserts Tmx Toolmex Part #6-Sir-1250-S22