Wheel balance weights for Aluminium Alloy Wheel and Steel Wheel application Clip-on and adhesive balance weights available Material available:Zinc-Alloy, Fe, Pb-Alloy Material for balance weights body:Zinc-Alloy Material for balance weightsclip: Spring-steel(AISI 1066)(hardness:HRC40-44) Ponderance tolerance for balance weights and the forceof balance weights unload from wheel: Gramme Performance 51015202530354045505560Ponderance Tolerence (g)±0.5±1±1.5±2±3Unload force (N)≥50≥100≥150≥200 The package is according to customers' requirements.