New replacement Rotary Cutter Gearbox for Land Pride Models RC1548, RC1560, RC1572, RCR1242, RCR1248, RCR1260, RCR1542, RCR1548, RCR1560, RCR1572, RCR1660 AND RCR1672 Rotary Cutters all with a 1:1.93 Speed Up Gear Ratio. This gearbox mounts via 4 mounting holes that are 4-3/4" apart center of hole to center of hole and 6-3/4" measured on a diagonal. Each bolt hole is sized for a 5/8" mount bolts (not included). The input (where PTO shaft mounts) is 1-3/8" (35mm) Round and is drilled for the 1/2" Grade 2 shear bolt (not included). The bottom blade shaft measures 1.57 inches and has 12 tapered splined. This gearbox includes a new 1"-14 pitch blade pan mounting nut with cotter pin. The torque for this blade nut is 300 ft lbs.