Heavy Grips 150An Intermediate Challenge Athletes with a fairly strong grip can usually squeeze out a few reps with the Heavy Grips 150. It can be challenging for females and younger athletes, although those athletes can easily work up to the HG 150 in a short time with consistent training. Average rating: 65 lbs Coated spring for excellent rust protection Plated aluminum handles increase durability of knurling More forgiving, smoother knurling makes volume work