Knuckle Duster Dagger

A single finger knuckle duster that has a dagger blade attached. The Finger whole is the average male ring size of 20mm diameter. Scale model as needed using your ring size in the chart below.Ring Size (US)Diameter (mm)Scale Factor515.70.785616.50.825717.30.865818.10.905918.90.9451019.80.991120.61.031221.41.071322.21.111423.01.15If there are any knife designs or other tools or cosplay props you would like to see, please message me an image and i will design it.