Finger Training The Royal Putty
85 grams of material for hand and finger training. Here you can knead as much as you can in the soft mass of a specially developed rubber and significantly increase your finger strength. The finger training mass is available in different hardnesses, indicated by different colors as follows:
Beige - Xeasy
Yellow - Easy
Red - medium
Green - hard
Blue - Xhard
DeRoyal Putty is based on paraffin, making it non-toxic and safe to use. Depending on the hardness and level, the different hardnesses can be mixed together and a new medium hardness can be formed.