The park tool rt 2 head cup remover makes headset cup removal easy the tool is pulled through the frame until the flared ends snap in behind the cup a blow on the tool head removes the cup park tool rt 2 head cup remover features the rt 2 is specially designed for removing 1 14 and 15 inch head cups the flared end fits through the head tube and snaps behind the cup allowing the cup to be removed with a tap of a hammer durable heat treated alloy steel with nickel finis