This kit includes: 16 x Poly Locks for Roller Rocker Arms Kit, the Poly Locks for Roller Rocker Arms is same with OEM standard quality, has been inspected before shipment in the factory
Material: Made of high quality :aluminum steel, wear-resistant, corrosion-resistant, and long service life
Replaces: Studs are factory precision ground to minimize runout and tapered for strength in the locking area
Size: 3/8 inch, fits most extruded aluminum rocker arms
Premium Support:Easy to reach customer service, we focus on product quality and customer service, our customer service is first-rate