Ball

440 stainless steel
heat treated
hard chrome plated
ground and polished

Body

304 stainless steel
17-4PH(SUS630) stainless steel, heat treated

Race

304 stainless steel
17-4PH(SUS630) stainless steel, heat treated

Liner

PTFE Composite
PTFE-Strong & flexible bronze mesh spread with fluorine resin
PTFE FABRIC

Size

Inch and Metric

Body Surface

Chrome plated, Decorative chrome