QA1 has developed a line of ball joints to accommodate the most demanding applications. This patented design addresses impact loading, self-lubrication and severe environmental elements. Alloy steel wear rings are interlaced with an acetal liner to provide an extended wear life over conventional automotive style ball joints. Introduced in 2004, these products are the standard OE parts in the ATV, snowmobile, electric vehicle and commercial lawn and garden industries. QA1's industrial ball joints can be customized for specific applications. Contact QA1 for on-road applications with speeds exceeding 25 mph, as a modified design is required. BALL STUD 40 Cr -HRC 30-36. Zinc Plated Per ASTM B-633, Type II, SC3. HOUSING 40 Cr. Zinc Plated Per ASTM B-633, Type II, SC3. LINER Acetal. CUP AND RETAINER FZ1465 Iron-Copper Alloy Steel. Heat Treated and Oil Impregnated. BOOT High Tear Strength, High Elongation Neoprene, 60 Durometer.