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Extension Coupling

In-stock SKU: N/A

Wilson Extension Couplings, available in both plain or reducing types, are generously proportioned and heat-treated to withstand applicable torque loads. Sockets have clearances to accommodate drive extensions, universals, and more.

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Square SizeOverall LengthDiameterPart No.
InchesInchesInches
3/8 x 3/81-7/1613/1620061
3/8 x 1/21-9/161-1/1620189
1/2 x 1/21-11/1620063
1/2 x 3/42-1/161-3/820191
1/2 x 12-5/161-7/820193
3/4 x 3/42-1/81-1/220065
3/4 x 12-3/81-7/820202
1 x 1320067