Evenheat Kilns Type-K Thermocouple, 8 Gauge, 4" long from tip to block, includes four 1" x 1/2" cylindrical insulators and connection block as shown.
 
Suits Evenheat Models;
RM II 1210
RM II 1210-B
RM II 1413
RM II 1813
RM II 1822
RM II 2322
RM II 2329
RM II 2522
RM II 2541
RM II 2922
 
Note; Your kiln may or may not have its original thermocouple, particularly if it were purchased used or replacements were made with incorrect or non-Evenheat parts.