The George Barnsley Edge Beveller leatherworking tool, also known as an edge shave is for running along the edges of leather to take off the sharp edge
 
Suitable for all aspects of leathercraft
Available in sizes 
0- 1mm 
1 - 1.5mm 
2 - 1.8mm 
3 - 2.3mm 
4 - 2.8mm 
5 - 3.6mm