Kitchen Mixer tap


I have a new sink and mixer tap to replace 2 individual kitchen taps. It says on the new tap box that I need 2 x 15mm tap adaptors to fit the new mixer to my existing pipework. What are these, and how do I fit them from my pipework to the taps? The water pipes have threaded ends which currently have flexible hoses running to the taps, the new tap has 2 (approx 25cm) threaded copper pipes which fit into the bottom of the tap. These pipes are not threaded on the bottom end, so how do I go about connecting them to my existing pipework?
I went to B&Q and got given 2 x 15mm flexible hoses which fit the pipes but not the copper pipes coming out of the mixer tap. Am I missing something?
Many thanks for any help.
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What ends have you got on the flexy hoses? You need to know whether they are male or female, and threaded, or compression or solder-on ends. The copper pipes from the taps are plain, right? ie no threads, no brass nut etc. I would suggest getting a couple of 15mm isolators, which will allow you to turn the water off to the taps without turning off the supply to the whole house. They will have compression fittings at either end, which allow you to tighten them on to the pipes with a couple of spanners.
Steve
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