Coloured drawing pins are made from brass and are 11 mm wide, an essential item for the office for attaching documents to walls. Drawing pins or thumb tacks are used to fasten items to a board or wall and were originally invented in 1900 to mark points on maps. These brass drawing pins with a flat, coloured head are simple and bright, suited to using in homes, schools or offices. Sold in boxes of 100 coloured drawing pins.