This is a White Colored Filler for filling gaps in the wood of an aircraft fuselage, wing, or tail section before covering is applied for smoother finishes. FEATURES Ready-to-Use, no preperation or mixing is required. Filler is very easy to sand, so even sloppy applications can be smoothed for a very nice looking finish. INCLUDES: One 8 ounce plastic jar of Balsa Filler REQUIRES Sanding smooth and using a tack cloth to clear surface before covering. COMMENTS White colored balsa filler may show through the covering and appear as spots. Part HCAR3400 by Hobbico