The Tektronix P6109B probe is a 100MHz oscilloscope probe designed with a resilient, molded rubber body that is virtually indestructible. They are lighter in weight, more comfortable to hold and more reliable than modular probe styles. The probes' replaceable tips are designed to withstand up to 20 pounds of force. Patented integral strain relief allows complete freedom of movement while providing superior cable flex. Each probe has received UL safety certification and meets MIL-T-28800, Class 3, environment specifications - something portable scope users will appreciate