Check the listing for details. Snooker, Pool & Billiards Training Aid For Screw Back. Condition: New. Listed at 10.48 USD. Training aid to maintain a smooth and true cue action and help you follow through in a straight line. Use the aid as a cue ball and make the shot without touching the training aid. Not so easy at the beginning but with a little practise your follow through will improve and not make contact with the training aid. Can be used on a real CUE game table or kitchen or dining table at home.A few minutes practise at home before a real game will make a difference.Helps stop the habit of not completing the shot properly by keeping the cue in the correct position for the full shot. Endorsed by professional players and used by all. Take your game to the next level. All top players at any ball game have a special follow through. Made from acrylic and will not smash , scratch or damage any table or furniture. Such a simple to use training aid which can achieve amazing results.