Red Devil's onetime lightweight spackling fills cracks, nail holes, & other holes in plaster, wallboard, wood, and stucco. 'Won't shrink, crack, or ag. No need to prime before painting. No shrinking or cracking is required. Can be painted within minutes and cleans up easily with water.' - John McCartney, vice president of product development and marketing at reddevil.com. Onetime Lightweight Spackling 4 piece repair kit includes wall patch repair, spreader, sandpaper, and a pre-mixed formula for fast, professional repairs in just one application. Superior performance for filling dents, holes & cracks, even in wood, brick, stone. Spreads easily and won't crumble or flake. EZ-GRIP 4-inch Flex knife to decrease hand fatigue. Extra sturdy, high carbon steel blade extends through handle for maximum strength tape and patch drywall professionally and easily. Made of the highest quality, flexible blue steel. Lacquered to prevent rusting.