Place the railing into position where you are installing it. Get someone to help you if you're having trouble moving the railing. Position the railing so that it is evenly spaced from the edge of the surface where it's being installed.
Mark the location of the screw holes in the base of the railing onto the concrete and remove the railing.
Drill pilot holes into the concrete at the marks. Use a hammer drill with a masonry drill bit.
Unscrew the bolts from the concrete sleeve anchors and place the sleeve anchors into the pilot holes. Tap the top of the sleeve anchors down gently with a hammer if needed to get the top of the sleeve anchors flush with the top of the concrete.
Move the railing back into position, lining up the holes in the base of the railing over the pilot holes in the concrete.
Screw the bolts into the sleeve anchors with a socket wrench, but don't overtighten the bolts because you could break the sleeve anchors.
Cover the heads of the bolts with paint so they match the color of the railing.