They are NEW NOS (Set of 16)   Genuine GM Hydraulic Lifters Lifter 5232700, HL-65 Vintage OEM, NOS Made In USA is a high-quality car part designed by GM specifically for vintage vehicles. This lifter set is a genuine OEM part made in the USA, ensuring a perfect fit and long-lasting performance. With its vintage design and durable construction, this hydraulic lifter is a reliable choice for maintaining the engine of your classic car. I bought these years ago for a engine build and never used them. Nothing like Original GM Parts.