Both the Clic Eraser refill from Pentel and the SumoGrip refill from Sakura are acceptable eraser refills for my Logo II pencil. I have to add Scotch tape to make them fit perfectly, just like my original fix for the Logo II.
Last summer I gushed about my favorite mechanical pencil, the PaperMate Logo II here. I’ve now bought 3 cases of them, 12 0.7mm pencils and 24 0.5mm pencils. I use them constantly and love them (read my post for a vital fix to the eraser!).