JAG512 4 Inch Kitchen Sink Waste Coupling with Under Basket, SS 304 Stainless Steel Sink Drain Jali, Kitchen Sink Waste Strainer, Drain Waste Fitting for Kitchen Sink

This is the only coupler I came across that threads outside without using a center nut which other couplers use. The center nut in the earlier coupler I had used to wear off due to rusting and the coupler used to fall off. That was a nuisance once every 1 or 2 years. Now with this coupler, the coupling nut is outside and is made of plastic, so there is no fear of the coupler falling off.

This item is a very good. If we buy it, we can set it ourselves. It is a very useful item.

The end to be attached to the waste pipe is to small; doesn't serve the purpose.

Worst purchase first of all, it is not made up of Pure stainless steel. It is completely made up of aluminiumand the most important thing is that the fasten nut is completely made up of plastic which is very weak and it is unable to tighten a perfect grip and also the build quality is very poor, the collor of coupling is uneven. Don’t buy it if you are looking for long-term purpose, I would rather look for something else, more durable, and also it is not perfectly fit for kitchen sink

shape of this product effects the problem you face in kitchen drainage pipe . this is a nice product . that stop all garbage in itself