I've fitted a new handrail to my attic stairs. Its circular pine on metal poles. I want to attach the end that butts up to the wall more firmly. I'm after something like the collar you get on wardrobe clothes rails but in 2 inches diameter.
I did mine with a decorative oak rosette, bolted to the end of the rail from the reverse side and then screwed to the wall. That might be overkill for attic stairs, though (but the principle might still be sound; bit of circular or oval pine, drill a couple of wall-mounting holes and plug them with pine plugs when you're done)
I'm not sure you'll find something that's angled though, because there's always a little variation between stairway angles in homes, and a manufacturer couldn't make one part that all rails could be expected to fit into.
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