The plug in our bathroom sink is the press button type. The cylinder that is screwed into the top plug came apart due to age, so I have bought a new fitting and now have to remove the old casing. In the pic attached you can see the inside of the drainpipe. The circular part is actually casing that twists out - and I haven'
t been able to twist it out. I bought some long neck pliers, but still I cant move it. Is there a special tool I could get to remove the casing?