When it comes to wood or composite, composite wins every time. Timberwolf 8” Composite Shims have many unique qualities, including: 30% more load support than wood No splitting or cracking No swelling, warping, or rotting Insect-proof, weatherproof, and waterproof Snapping is four times easier than wood with 37 pre-scored lines So, if you need shims for leveling, repairs, or home improvement projects, Timberwolf Shims has you covered!