610 Series Vers-A-Tip Oscillscope Probes - Made in the U.S.A.
 
API's 610 series probe combines all the quality and durability
of our 510 series with the added versatility of
Interchangeable/Replaceable tips. The Pro-Line affords you
the option of using either our standard .055" tip for
durability or our .030" miniature tip to reach more difficult
test areas. Improved electronics and faster risetimes have
increased the bandwith to 150 MHz for use with higher end
oscilloscopes.