Limit Switch Lever Arm, Actuator Type Standard Roller, For Use With 11X439, 11X440, 11X444, 11X446, 11X451, 11X454, 11X486, 12T835, 12T836, 12T837, 12T886, 12T887, 12T888, 12T889, 12T895, 12T896, 12T897, Mfr. No. 11X445, Arm Length 1.38 in, Roller Position Front, Roller Dia. 0.63 in, Roller Width 0.25 in, Roller Material Nylon, Arm Width 0.8 in, Arm Depth 0.64 in