Wilki Products Co.'s Dutch Finger
The Dutch Finger is made in the United States with aircraft aluminum, a galvanized steel center and neoprean rubber ends. It can be tightened by hand, inserted in pipe with liquid flowing, used as a test plug and inserted through a full ported ball valve, gate valve or union. It's compact (1/2" and 3/4"), tested to over 100 psi and other sizes are available upon request.
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