Unions by PondGardener $ 16.99 1 1/2" Threaded - $ 16.99 2" Threaded - $ 19.99 1 1/2" Slip - $ 16.99 2" Slip - $ 19.99 Select Size 1 1/2" Threaded 2" Threaded 1 1/2" Slip 2" Slip 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Excellent for use in joining two pipes together where a serviceable connection is desired.