OATEY P9675 Dearborn® 1-1/2" 90 Degree Slip Joint Elbow

No cement. The P9675 uses slip joint connections, which seal with a slip nut and a beveled washer compressed by hand onto the tube, so the fitting is removable and adjustable after assembly. That is what lets you rotate the elbow to line up a trap arm without cutting anything.

It is a directional elbow, not a trap. A 90 degree slip joint elbow carries no water seal, so it cannot substitute for a P-trap or a trap bend on a fixture drain. Use it downstream or upstream of the trap for the turn, and buy a proper 1-1/2 inch P-trap for the seal.

Polypropylene, in white. That makes it a plastic tubular drain fitting, so it will not chrome-match an exposed metal P-trap assembly under a pedestal or wall-hung sink. Under a cabinet where nobody sees it, the white poly is the normal choice and it resists the drain cleaners that eat thin-wall brass.

It turns a tubular drain line a square corner, most often taking the horizontal trap arm into a vertical drop or offsetting around an obstruction like a disposal or a cabinet stile. Because the P9675 is slip joint at both ends rather than cemented, you can set the exact rotation on site. If you need a gentler change of direction or a longer reach, a slip joint extension plus a shorter bend works better than forcing this elbow.

About 0.112 lb each, with a listed volume of 0.027. Light enough that MRO and property maintenance buyers normally stock these by the box for cart and truck inventory rather than ordering one at a time.