Grips introduces its popular Quad 4-N-1 insert in NEW Ĺ sizes. With
improved selection, now in 19 sizes, the Quad 4-N-1 series is a must-have
for the serious bowler's arsenal. As an added plus, each Quad insert is
designed with a patented Glue Groove to minimize excessive adhesive from
seeping to the surface of the ball during installation. Even the newest of
bowlers can now swap their own grips quickly and easily.