DRIVE GEAR AND PINION, 41-10 TOOTH, 4.56 TO 1 RATIO, 10 SPLINE PINION, MODEL 27 AXLE, #17263 RING GEAR, 7 3/4" O.D. X 4 1/4" I.D., X 3/4" THICK, #18394 PINION GEAR, 8 1/4" O.A.L., 8 BOLTS, SALISBURY BRAND. New Old Stock, May have some shelf wear.