conical clutch mechanism compatible with bertolini for walking tractor walking tractor mower tractor models 307 series bcs for walking tractor mower mower models 715 series 725 series 735 series (minarelli engine) ferrari for walking tractor mower (transporter) walking tractor models 71 2nd series (minarelli engine) characteristics cone 23 mm 㘠103 x height 96 mm with hub bearing: 15,0 x 12,0 x thickness 8 mm code: 56015 original code: em