Rotary Corp brand aftermarket product. MTD/Troy Bilt Fits /Toro Spindle Assembly. Replaces 618-04134, 618-04134A, 618-04134B, 618-04134C, 618-04134D, 918-04134, 918-04134A, 918-04134B, 918-04134C and 918-04134D. Fits mowers made 2005-2009. Toro 112-0383, Model LX465. Pulley Sizes - Top Pulley 5-5/8" - Bottom Pulley 5".