Probe Sets: 4 double ended. Surgical quality probes with hundreds ofuses including model making, electronic hobbyist, jewelers, automechanics etc. Soldering, o-ring extraction, circuit probing, retrievingwashers, gluing, adjusting, furniture detailing and other types ofmini-manipulation. Spring hooks, ceramics, sculpting etc. Polished andhardened stainless steel. Precise, needle sharp points. 6-7inch length.