Targeted training, one or two fingers at a time--even your thumb.
IMTUG4: For those who are working with the Trainer and No. 1 CoC Grippers; and who want to train their index/middle fingers. Also for those who are working with the No. 2 and No. 3 CoC Grippers; and who want to train their pinch grip or ring/pinkie fingers.
No. 1414 (1 lb.) IMTUG4, the fourth of seven strengths $19.95