Carbide Insert RDMW1204MOT-PM (pack of 10 1box)

The RDMW1204 milling insert has a diameter (D) of 12.7mm, a thickness (T) of 4.76mm, and a corner radius (R) of 1.2mm. The "1204" in the name indicates the inscribed circle diameter (12mm) and the thickness (4.76mm)

Here's a breakdown: 

• D (Diameter): 12.7 mm
• T (Thickness): 4.76 mm
• R (Corner Radius): 1.2 mm