Durability: Made from tough ABS with 3D printed whole piece construction, and wear, maintaining precisely slot dimensions even after repeated long term use MultiAngle Grinding: Features 90° / 118°, / 135° standard grooves angles for sharpening twist drill bit, ensuring accurate edges alignment with grinding for consistent cutting Easy Handheld operate: Designed for beginners, enthusiasts, simply insert the drill bit into the corresponding angles slot and rotate against the grinding wheel for effortless sharpening without professional skills Wide Compatibility: Works with most home and workshop bench grinders, ideal for metalworking, woodworking, and repair tasks to restores worn or damaged drill bits efficiently Compact and Portable: Lightweight block design for easy storage in toolboxes or bags, featuring bright color for quick identification of different angles specifications, Manufacturer: Zxfdsfdbnm