ITEM NAME:3 Pcs Radius 1/4" Shank Round Over Beading Edging Router Bit Woodworking Tool UM Descriptio n Description: Size: As Shown In The Figure, The Shank Diameter Is 1/4 Inch (65mm) 1.Size: 1/4'' X 1/4''ï ¼Ë†Shank X Radius) D (Diameter): 15.35mm R(Radius): 3.17mm B(Width):3.17mm H(Thickness): 7mm L(Total Length): 52mm 2.Size: 1/4'' X 3/8''ï ¼Ë†Shank X Radius) D (Diameter): 22.5mm R(Radius): 4.76mm B(Width):4.76mm H(Thickness): 9mm L(Total Length): 52mm 3.Size: 1/4'' X 3/4''ï ¼Ë†Shank X Radius) D (Diameter): 32.05mm R(Radius): 9.52mm B(Width):9.52mm H(Thickness): 15mm L(Total Length): 60mm Specifications: Material: Car.(Size: 1/4" X 1/4"ï ¼Ë†Shank X Radius). Size: 1/4" X 3/8"ï ¼Ë†Shank X Radius). Size: 1/4" X 3/4"ï ¼Ë†Shank X Radius). R(Radius): 3.17mm. R(Radius): 4.76mm. R(Radius): 9.52mm. We want to make sure you are happy with our item.