Milwaukee Twins Heavy-Duty P Clamp The Milwaukee Twins Heavy-Duty P Clamp is manufactured from durable cold-rolled steel, offering robustness with its 1/8 thickness and 7/8 width, ideal for exhaust security. It comes with an adjustable flat bar approximately 6-1/2 in length, equipped with versatile 3/8 holes for a variety of securing purposes. Formerly offered under the J&P Cycles brand. Features: Made of cold-rolled steel 1/8 thick, 7/8 wide 1 3/4 clamp diameter Adjustable flat bar of the clamps measures approx. 6-1/2 and has 3/8 holes