P-196-5blk Black SOFT Leather Belting (6 mm wide) – almost 1/4″ wide, for phonograph motors. 40 cents per inch; order the number of inches needed. Not perfectly straight, some curling.
Please see https://www.phonographs.org/shipping-returns/ for shipping costs and returns before ordering.
NOTE: Most leather belting for phonograph motors is not cut perfectly straight – there will be some curling. Much of such curling can be ‘straightened’ by stretching the belting or forcibly pulling the belting over a sharp edge.