If you are looking for a specific size, do not trust the product description photos here. This is a 1/2" diameter and not 1/4" (6mm) as shown in the photos in the description.
πͺ Kutzall 3.1mm Extreme Taper Shaft
5 Review
Kutzall Original Cylinder Rotary Burr, 1β8" Shaft, Fine - Woodworking Attachment For Dremel, Foredom, DeWalt, Milwaukee. Abrasive Tungsten Carbide, 1β8" (3.1Mm) Dia. X 7β8" (22.2Mm) Length, C-18-EG
5 Review
Kutzall Extreme Cylinder Burr - Very Coarse Woodworking Abrasive Tungsten Carbide For Dremel, Foredom, DeWalt & Milwaukee
5 Review
πͺ TianTac Tungsten Carbide Carving Grinding: Superior Precision and Durability
6 Review