"CONTACT PENCIL TRANSDUCER DESIGNED WITH DELAY LINE TIP AT RIGHT ANGLE; REPLACEABLE DELAY TIPS; USEFULL RANGE FROM 0.010-0.250 IN.; APPLICATION INCLUDE TURBINE BLADES, SMALL DIA. TUBING, AND CONCAVE AREAS IN SMALL PARTS; BROADBAND FREQUENCY RANGE 10-15 MHZ.; CENTER FREQUENCY 11-12 MHZ.; BANDWIDTH 12-15 MHZ AT M6DB; MAX. EXCITATION VOLTAGE M250 VOLTS;MEDIA SOLID,TERMINAL QUANTITY1"