In stock Fingerboards Problemsolver inserts, 4 sets €14.00 Are you too strong for this board? Here's a good way to upgrade your Problemsolver. 4 different sized sets of inserts for Problemsolver hangboards, to make the holds smaller. Sizes: 80 x 20 x 2 mm 80 x 20 x 3 mm 80 x 20 x 4 mm 80 x 20 x 5 mm Add to cart