GT2121B – SCRUB-IT Pads- Blue. Case of 4 units. 10 per unit. The Blue SCRUB-IT replacement pads come in 10 per unit. The blue pads are more aggressive and used for removing adhesive residue from glass. The pads are made of scratch resistant material but use with caution. Test on a small part of glass before use as not all glass is made the same! Please make sure to check newer vehicles for factory coatings that are applied to the inside of the glass that might be damaged by the SCRUB-IT.