Based on a three-year study, the USBC are changing the specification of bowling balls over the next two years, starting 1st August 2018. The BTBA continues to follow the USBC on these matters and members should be aware that their bowling balls and the use of cleaners during sanctioned play, must comply with these regulations as detailed in the summary here.
The USBC news release can be found here.
Paul Le Manquais
BTBA Head of Technical Services