Pack of 2 multi-purpose adjustable spring boards made from high-tech polymer to resist deformation under pressure, providing stable support during cuts. Pre-load tension design keeps the stock close to the surface of the tool or fence while cutting, improving accuracy, surface quality, and overall safety by reducing movement and deflection. Split rail mitre bar delivers constant tension and maximum hold, and can be used as a versatile DIY woodworking accessory for fences, jigs, and other projects thanks to its split rail construction. Fine protection: the spring plate protects hands and helps prevent kickback, binding, and warping of curved or warped pieces. Use scenarios - For accurate crosscuts and mitre cuts on a table saw or router table, ensuring repeatable results. - As a helper when building picture frames, cabinets, or other small projects, keeping stock aligned with the fence. - In hobby woodworking tasks, creating jigs or DIY accessories where steady tension and grip improve cut quality and safety.