The RT-1 and RT-2 Head Cup Removers make headset cup removal easy. The tools are pulled through the frame until the flared ends snap in behind the cup. A blow on the tool head removes the cup.
SHIS terminology: RT-1 removes cups of EC29, EC30, EC34, EC44, ZS41, and ZS44
The RT-2 will remove cups of ZS44, ZS49, ZS55, ZS56, EC49 and EC56 headsets