Accessory Type = Dual Lock Link Kit / Suitable for = 34460A, 34461A, 34401A, 34410A, 34411A & 34420A Digital Multimeter, 34970A/34972A Data Acquisition/Switch Units, 531xxA & 53200 Series frequency counters, 33120A, 33220/250A, 33521A/33522A & 33500B Series Function Generators