actuator arm, 1.500 in. lg, 1.050 in. max w stainless steel roller 0.750 in. dia. x 0.310 in. w, lockscrew w 0.037 in dia. hole for wire locking, 1.122 in approx. free position at one extreme of its adjustable range, roller lever may be positively locked at any position within a range of 180 deg approx., operating force 3 to 6 lbs, overtravel force 15 lbs maxrelease force 2 lbs min., pretravel 0.800 in. max differential travel 0.040 in. max, overtravel 0.500 in. min., unit designed to withstand temperature of 600deg f.