My mid drawer sectional KRA429F was missing pull handles. I found that a Monroe PMP PH-0300 weld-on pull handle fits perfectly. Since the plate is blank, holes will have to be drilled that align with the studs on the case. Each handle cost around $8.00 from Acklands-Grainger. These handles are used on other models of Snap-on boxes including KRA59F, etc.
My roll cart KRA545C was missing the grab handle. Since the original design handle is NLA, I ordered a Snap-on replacement grab handle, part number 5213x50pv. This handle also fit the provided studs perfectly. Cost is around $20.00.
Picture shows the Snap-on pull handle (lower) and the Monroe PMP handle (upper). Both handles are not yet finished but will be spray painted to match the colour of the toolbox.