Fitting Tape is a cloth tape specifically designed to modify release, ease grip tension and/or adjust hole size without making major changes to ball drilling. If you suffer from increased swelling while you bowl, Fitting Tape could be an ideal solution. No more fidgeting with taking pieces of tape in and out of your ball. Simply apply the tape to your fingers or thumb prior to bowling and remove as you swell. F125 Fitting Tape Purple has a semi-smooth texture. The 100 series has a loose weave, slower release, medium thickness. SOLD IN INDIVIDUAL PACKAGES OF 30 PRE-CUT PIECES