Length from handle to tip of brush: 15.3cm (6")
Brush length x diameter: 89mm x 77mm dia. (3-1/2"" x 3" dia.) 
Twisted pair wire, individual wire diameter/overall diameter: 2.3mm/4.6mm (.090"/.180") 
Polypropylene plastic wire cover tube: 9.5mm dia. (3/8" dia.)