Sell Chalk clip / teacher environmental chalk cover double spring magnetic (box 4) GU2J best price

This product is (box 4) plastic box. The product has a red / yellow / green / blue appearance, chalk cover does not contain chalk. Using it to write chalk characters can reduce chalk ash opponent and clothing pollution, no longer for the fingers dry peeling trouble, and can save chalk, Avoid the chalk being broken during use. Magnetic stripe chalk clip features : 1. Press your thumb gently and the chalk will show up 2. Not dirty hand writing chalk words do not worry about dust, suitable for children and teachers 3. Specification: peripheral length: 9.5 cm, diameter: 2cm 4. Colour: blue / yellow / red / green