These were purchased as spares and never used in a customers racing operation giving someone a chance at a new set of sixteen Ultra-Pro mechanical roller lifters at a discounted price. Fits Arias, Fontana, MBR, BAE, TFX, KB, engine blocks with a .904' diameter spread lifter bore. Lifter uses a vertical locking bar with 8620 steel body with .120" tall pushrod seat location.
Note: This is a used item. This item might have been taken in on a trade. RBS may have inspected this item and deemed re-usable. There is no warranty expressed or implied with this item.