A white 70gsm single sided paper with an acid free pH neutral acrylic adhesive. It has a high initial tack, great when working with heavier, textured or uneven paper and mount board surfaces. Due to the high initial tack the tape is permanent and can be difficult to remove.When hinging art, always hinge from the back of the art, only 25mm wide x 5mm deep of the tape should be on the artwork. Always place the tape 40mm or more away from the image. Do not use on high value or irreplaceable art.