The Dewalt Chalk Reel 3:1 Single is a marking tool designed for use in home and garden, tools and workshop equipment, and measuring and layout tools. It is a Dewalt product with a model number of Dewalt 3:1 and a manufacturer part number of DWHT47372. The product is a chalk reel with a 3:1 gear ratio and a single line. It weighs 0.5 pounds and has a SKU of DWHT47372.