This equipment is applicable for three grades of snib mechanism durability test. One is run 10,000 cycles for classification of grade A, the second and third run 25,000 cycles for grade B, G, L, R, W and grade C, H, M, S, X.  Two test modes of sliding test and turning test for selectable to meet different snib mechanism. In the test process, it’s moving the snib from unlocked to locked position and back to unlocked at a speed of 60 cycles per minute.