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1-1/2 in Drain Pipe Snap-On Knee Guard
This is a 90 mm long C-shaped sleeve that snaps onto a standard 1-1/2 in tubular sink drain (38.1 mm OD), either the tailpiece or the trap arm. It covers a roll-under or wall-hung sink's hot, sharp-edged drain so wheelchair users don't bump their knees on it. Ten inner standoff ribs leave an insulating air gap. A flared 34 mm mouth lets you push it onto the pipe without taking the plumbing apart, and you can add a zip-tie if you want it held tighter.
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