Locks the Rocker Arm Shafts in place Centers the Inner Rocker Cover The Rocker Lockers eliminate the space, locking the shaft from turning and striking the bolt, eliminating that annoying tick. The Rocker Lockers also center the inner rocker cover so that it is always located in the same position eliminating different wear patterns on the rocker arm/valve and a better alignment of the pushrod in the holes. Condition:100% New Specification: Fitment: For Big Twin Motors 1984-2000 For Sportsters Series 1986-2006 For XL 883 1100 1200 colour: black + gold Material: Metal Package Contents: 4 x bushes 1 set x screws and washers 1 x tool Note: Rocker Lockers will not quiet noisy lifters, noisy chains, gears, tensioners or bearings. Rocker lockers keep the shaft from rotating and hitting the inner rocker bolts. Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.