AST Labs Oscilloscope Probe 150Mhz 1x 10x for HP Tektronix, etc. 150MHz Bandwidth Probe Retractable Hook Tip: 1 | Tip Locating Sleeve: 2 Marker Rings: 4 sets | Ground Lead: 1 sets Adjustment Tool: 1 Fits popular oscilloscopes by HP Tektronix, Agilent, etc.