Shinya Tanaka Jissen Naoshi Jissenkai Practice DVD Vol. 47 "Tips for Those Who Can't Hit a One-Handed Backhand!" (Retail Version) Vol. 60 "One-Handed Backhand Reform Theory" (Retail Version) Vol. 93 "Your Slice Will Fundamentally Change! 'Original' Slice Backhand" (Retail Version) Vol. 94 "'Original' Backhand Master Program - One-Handed Spin Edition" (Retail Version) Set of 4. Vol. 47 and Vol. 60 are DVD-R format. There are no noticeable scratches, and they can be viewed without any problems. However, please understand that these have been stored by a private individual. Thank you.