HHIP 14 Piece 5/8" Shank Right hand external and internal grooving tool Kit is suitable for varied external and internal grooving. Tool holder design provides precision clamping and insert indexing accuracy. Carbide inserts are included for semi-finishing/roughing machining. Set includes an MGEHR10-2B external holder #2207-0625. The external holder has a maximum cutting depth of 1/2", a shank size of 5/8", and is the overall length is 4.5". Also included is a 5/8 x 5" right hand S10K-MGIVR/L2 internal grooving tool holder #2208-0625. The internal holder has a maximum cutting depth of 0.197". These holders both take MGMN 200 inserts # 6024-3022 and 10 are included in this set. The inserts screw is a GB70-85-M4 x 10. AT3.