Parts list: № Number Qty Name Options 1 HXE53570 40 Knife Next page: ST969118 Cutterhead Assembly W/ 56 Knives, Non-Coated ST929411 Cutterhead Speed Sensor and Mounting Parts ST930309 Cutterhead Assembly W/ 40 Knives, Coated ST930311 Cutterhead Assembly W/ 48 Knives, Coated ST932946 Cutterhead Bearing W/ Housings ST957322 Spiral Band, Dura Line™ ST929424 Cutterhead Bearing Housing and Mounting Parts ST752403 Knife, Cutterhead W/ 56 Knives, Grass ST930315 Cutterhead Assembly W/ 64 Knives, Coated ST969089 Cutterhead Assembly W/ 40 Knives, Non-Coated