Features: Double head design allows quick switching between installation spacers, boosting efficiency for woodworking projects with its durable plastic construction and easy to grip ergonomic handles. Crafted from high strength plastic, these metric compatible shims resist deformation under pressure while minimizing friction between wooden surfaces for long lasting performances. Ideal for DIYer enthusiasts and professional carpenters requiring precise alignment during furniture assembly or home renovation tasks in tight spaces. Perfectly suited for indoor cabinet installations, outdoor deck constructions, and workshop projects where reliable tool visibility matters, bright yellow color ensures fast identification. Streamlines your toolkit with these woodworking shims, featuring double functionality and color coded convenience to simplify complex installations across multiple surfaces. Specifications: Component:plastic Technical parameters: 20-piece set, suitable for home decoration tool Use scenarios: Home decoration | Wooden board installation | DIY project Size: 1/4 & 1/3 inch Package Includes: 20pcs Plastic Shims note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.