Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! 135 Precision Sharpening: This grinds is designed for precise repair of drill tip angles, allowing for consistent 135 resharpening, no deviation, and can restore twist drills to factory conditions Simple, Repeatable, Mechanical Precision: This Drill Bit Sharpening Guide Jig does not require electronics and complex settings, just position, hold, and grind, and you can get repeatable and accurate results every time, suitable for professionals and amateurs who pursue precision materials: This 135 Angle Drill Bit Sharpener is made of material, which is stable for a long time. Unlike fragile 3D prints or metal parts that are prone to overheating, it can maintain its shape even after repeated grinding Compatible with most bench grinders: This Drill Bit Sharpening Guide Jig is suitable for standard electric dry and wet grinders, no modification is required, just clamp, calibrate and grind, designed for actual workshop environments to improve work efficiency Widely used: Our Drill Bit Sharpening Guide Jig is suitable for tool- makers, machinists and DIY enthusiasts such as metal workers, woodworkers, and engineers Color: Green Material: PLA Package Contents: 1 * Drill Bit Sharpening Guide Jig Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.