These blocks mount on the ball-exit side of pinspotters using an EDGE pin elevator. These larger blocks help greatly reduce the instances of pins idling in this corner of the pit.Be sure to install the new longer bolts using locktite to ensure they don't loosen from vibration.Includes:(4) HFJN 5/16-18 ZN(4) FW 5/16 SAE BO(1) THREADLOCKER, BLUE, 0.5mL(8) SFR 0.32 X 0.75 X 0.88 AL(4) BHSCS 5/16-18 X 3.00 BO(1) EDGE, PLOW, CORNER, ODD(1) EDGE, PLOW, CORNER, EVNCompatible with: XLi EDGE