3M Blue-to-White 8-oz Color-changing, Heavy Duty, Waterproof Interior/Exterior Blue Spackling KitWhen it comes to wall repair, you have the confidence and know how to get the job done right. Because a quality finish matters, choose NEW 3M High Strength Color Changing Hole Repair to help patch dents, dings or even holes up to 3 on interior and exterior surfaces with professional looking results. This color changing spackle lets you know when its ready to sand. Kit includes color changing spackling compound, 3 in putty knife, 4 in drywall repair