1 1/4" drain to 1 1/2" ABS wall pipe?

[Sinkdrainhelp]

We just installed a new vanity in our bathroom. The new drain kit is 1 1/4" plastic, but our wall pipe is 1 1/2" ABS. What parts do we need to attach the new drain to the existing wall pipe?

 

[Reach4]

At the trap adapter, use a nut with a reducing washer.