Spec: DUCT SIZE 2in. 50.8mm MAXIMUM DISK SIZE1.75in. 44.5mm MAXIMUM RATED CAPACITY 4800LBS. 21.3kN WEIGHT .5LBS. .23kg Description: Spreads a coat of wire lubricant in duct before installation of cable. Cleans mud, dirt, and light debris from duct before pulling. Tapered shape permits bi-directional use. Will not damage inner walls of duct.