■ Suitable for exhaust pipe maintenance, expanding the inner diameter of the exhaust pipe
■ Three sizes of large, medium and small are available, large: 2-1/8~3-1/2 (54 -89mm), medium 1-1/2~2-1/2 (38-64mm), small 1 -1/8~1- 3/4(29-44mm)
■ The driving ends are 19mm, 16mm, 16mm hexagonal rods