Yes, proper screw down valves, not ceramic so that will maximise flow. If one of the existing supplies is 3/4" then a 3/4">22mm solder fitting and a small piece of 22mm pipe to convert to metric, if the other is 1/2" then it's a straight change but use a brass compression then you can use plastic to give some flexibility if wiggle room is needed. Shame he cut out the old stuff, would probably have lined up pretty closely if the bath is in the same place as the old.