This kit can be used with Kett Tool KD-1493, Kett Tool P-593, Kett Tool P-2093, and other selected makes of 1/2" cut fiber cement shears as well as the Kett Tool 93-20 shear head assembly.1/2" Fiber Cement Blade Kit Kit #109 The kit includes: 1 each of 92-21 and 2 each of 92-22..