1、Smooth Edge: Made from acrylic, this artist learning bridge is reliable and clear, with smooth polished edges that won't cut your hands. 2、Transparent: This artist study bridge is transparent, easily visible and will not affect the integrity of your painting. 3、Hand Shaking Prevention: Simply place this artist learning bridge over the section you want to modify and start creating it, moving it around at any time to prevent your hands from shaking. 4、Versatile: This artist learning bridge is a practical drawing tool that can be used extensively, not only to modify your drawings, but also to add lines and details to your drawings, for frames no larger than 40cm wide. 5、Large Size: The artist leaning bridge is a generous 48cm in length, providing ample space for your hand and making it suitable for wider canvases. Even with your arm limiting the bridge's positioning, you'll still have a wide range of motion to work with.