The Fiskars steel extendable rotary cultivator features a handle that can be extended or shortened to fit your height, keeping your posture healthy and eliminating back aches from bending and sore knees from kneeling. The steel shaft is far more durable than wood and won't flex like fiberglass. Six rust-proof aluminum cultivating wheels move smoothly through virtually any type of soil and removable center wheels make cultivating around seedling rows quick and convenient.