Magnetic Dent Removal System (MDRS) was developed by Eric Satterlee and Wayne Tanabe and uses the most powerful Rare Earth magnets currently available – the N52 – for the removal or improvement  of dents in large bore brass instruments (tubas, baritones, euphoniums, sousaphones, large bore marching instruments and baritone saxophones.)

MDRS enables brass repair technicians to offer repair estimates for a wide range of dent removal situations that would otherwise be prohibitive due to time and labor required.