Conrad's E18 Press has a planetary reduction drive to provide smooth and easy operation under the heaviest pressure. The torque from the 10" (254 mm) throw aluminum hand crank is multiplied in the totally enclosed geared planetary reducer by a 6:1 ratio. Other features of the E18 Press include ... Large counterbalanced upper roll, 41/2" diameter 183/4" W × 36" L × 1/2" thick Benelex high density lignin-resin laminate bed plate Shipping weight, 297 lbs