[ CONSTRUCTION]Professional made with high carbon steel structure grip trainer, this finger grip set will you for years. The aluminum handle is sturdy and for a gentler feel while still giving you a great workout. [Hand Trainers]Unlike most workouts, you can take these hand trainers with you and exercise anytime, anywhere. Use them , in the office, or while traveling to turn your rest time into a productive workout session. [Grip Strengthener]For your forearm and arm strengthener, fingers and wrist, these grips provide the perfect way to strengthen your hand and increase your grip strength. As your hands get stronger, you will be to lift heavier weights. [Perfect Combination]Six suits to meet everyone's needs. Choose from a 6-pack that contains 100-350 lb grippers, each hand strengthening device increases in 50 lb increments, allowing users to gradually increase resistance and build strength. High Wear- and excellent durability. Material: High carbon steel + aluminum alloy colour: silver + black Package Contents: 1 x 100LBS Grip strength trainer 1 x 150LBS Grip strength trainer 1 x 200LBS Grip strength trainer 1 x 250LBS Grip strength trainer 1 x 300LBS Grip strength trainer 1 x 350LBS Grip strength trainer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.