AST Labs 100Mhz Oscilloscope Probe [2 sets] w/accessories kit for HP Tektronix, etc. 100MHz Bandwidth Probes: 2 Retractable Hook Tip: 2 | Tip Locating Sleeve: 2 Marker Rings: 4 sets | Ground Lead: 2 sets | Adjustment Tool: 1 Certificate of Authentication & Lifetime Support Fits popular oscilloscopes by HP Tektronix, Agilent, etc.