Individuals with neck, back, shoulder, and upper extremity limitations may benefit from using ergonomic hand and power tools. Ergonomic hand tool designs allow users to maintain neutral postures while minimizing wrist deviations. Users also have an easier time keeping shoulders relaxed by using lightweight tools. Mechanical stressors such as misaligned finger grooves, sharp edges, and single finger triggers should be avoided. Vibration from the tool should be minimized, and heavier tools can be suspended from tool balancers when possible. Spring loaded returns on tools such as scissors and pliers are also a part of good ergonomic design.