This M10x1.0 Bleeder Screw is finished in black oxide for a sleek finish to match our product catalog. All of our brake adapters are manufactured from quality-grade stainless steel machined to mil spec tolerances for a durable, tight connection. No matter what the job, sealing bleed points on calipers, clutch lines, and wheel cylinders, or just replacing aluminum screws that break off in steel ports, THIS is the bleeder screw you should upgrade to.Â