High Quality Material: The plastic chalk holders are made of high quality ABS plastic, sturdy and durable, anti-rust. Comfortable grip, erosion and long service life. Exquisite design: teacher chalk covers are easy to press with the magnetic thumb adsorption. A variety of colors, including red, yellow, green, blue, very eye-catching and energetic, making the learning atmosphere more active, the chalk length can be adjusted at will, loved by teachers and students. Comfortable and durable: The Reasonable design of the size and length of the chalk sleeve makes it comfortable to hold while using. It is not too tired to use hands for a long time, which is much more convenient than taking chalk directly. Convenient and practical: the inside of the chalk holder can hold the chalk, it is not easy to fall, it will stain the Hands not, and it can also restore the smaller broken chalk, which can prevent the broken chalk, easy to carry and write. Wide Application: This adjustable chalk clip is suitable for teachers, children, artists, schools and offices. It can greatly reduce the problems caused by chalk ash and is an indispensable tool for learning.