Features: • 15:1 and 25:1 ratios • Box sizes 2-9 • Tapered bushing type (bushing not included) • Ultra-high quality NSK bearings • Tapered bearings - double lip seals • Case hardened shafts and gears • All cast iron housing • Extended gear centers and tooth contact • Metal reinforced double lip, spring loaded oil seals • Dimensional drop-in for all major makes • Torque arm included