Insta Plumb, 1-1/4" OD x 1-1/2", Schedule 40, Marvel Trap Adapter, Allows For Faster & Easier Install, No Nut Washers Tools Or Glue Needed, Simple Push Fit Connects Quickly To 1-1/4" OD Size Plastic Drain Pipe & 1-1/2" Schedule 40 PVC Or ABS, For Use In Bathroom.