Rear brake caliper screw set is zinc.
FITMENT
1979 / 1981 XL MEASURMENTS
Length With Thread: 2-7/16 inchesLength W/O Thread: 2-1/8 inchesShoulder Diameter: 5/16 inchesShoulder Length: 3/8 inchesLong Screw Length: 2-3/8 inchesShort Screw Length: 2-7/8 inchesACCESSORY ITEMS
41-019416-0529
Use left/right arrows to navigate the slideshow or swipe left/right if using a mobile device