These Canadian engineered and built lifters are machined from solid brass or stainless steel are currently considered among the world's best. Tru-lifts are the only auto tone arm lifters that gently lift your arm using an ingenious magnetic fluid damping system instead of a spring based systems that abruptly pop up your arm up risking potential damage to your valuable stylus. Each package contains three different height adjustable risers so they're compatible with any turntable.