Tetrion Hard as Rock Filler is a super tough exterior filler designed for heavy-duty outdoor repairs on plaster, stone, concrete, masonry, and wood. Its ready-to-use formula requires no mixing, making application quick and easy. Touch dry in just 2 hours, it provides a durable, long-lasting repair that accepts screws and bolts. Engineered to be crack and shrink resistant, it withstands harsh outdoor conditions for a rock-hard finish. Ideal for a wide range of exterior filling jobs, this versatile filler ensures reliable performance and lasting results.
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