What kind of cable end do I need (brake handle)?

[Sample]

I bought one of these off of ebay. Are all brake cables a standard size? I don't want to order the wrong one.

NOS LEFT RUPP STYLE MINI BIKE BRAKE LEVER w/ADJUSTER on eBay.ca (item 150390281095 end time 28-Nov-09 13:20:34 EST)

 

[jmbmini]

It is most likely going to need a 3/8 barrel end cable. But measure the hole to be sure before ordering.