2.0Mm Min Bore Guhring 45 Deg Chamfer/Bore Rh System 104 Insert, 0.50Mm (T-Max) Offset, 4Mm Reach, Uncoated Right Hand, 0.10Mm Radius, Bright Uncoated Gt104.4518.010.04.20.R, Uncoated Type Gt104 Guhring Micro-Precision System 104 Carbide Stick Insert With 4Mm Quick Change Shank For Boring & Chamfering 45° Both Sides. Guhring Series No. 25120 Order Code 4.001 Made In Germany, Guhring Part #9251200040010 Guhring Inc.