Bodyworkers often use the classically shaped Knobble to save wear and tear on their hands when working on tough spots. The Knobble feels almost like a part of your hand and can be held with your fingertips touching the receiver's body. When held in the palm, and the smoothly rounded stem is used to apply pressure to trigger points in soft tissue. Minimizes wear-and-tear to the therapists hands. Wood products have natural variations in the wood which are normal and do not affect the performance of your massage tool. Proudly made in the USA.