Ask The Experts: Stefan Feth, No. 97 Butterfly Table Tennis Question and Answer Blade: Timo Boll ALC Proline Forehand Rubber: Tenergy 05 Backhand Rubber: Tenergy 05 Question: Hi, I have used my blade for 3 years; use it 2 times in a week and every usage last about 2 hours. I want to know when I should replace my blade […]