TIP for determining wall thickness. Take a 5¢ US nickel coin and lay it on the edge of your tube. If the tube thickness is less than or equal to the thickness of the coin it is 14-20 gage. If it is more than the thickness it is 10-14ga. The OUTSIDE measurement of the tube is the size insert you need.
Location: United StatesMember since: Mar 19, 1999Seller: weldamatic
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