Ergonomically shaped softball for finger, hand or forearm muscle training- Offers valuable muscle training for all musicians- Suitable for use on both hands- For training of fingers, hands and wrists and forearm muscles- Strengthens flexor and extensor muscles, joints and the carpal tunnel- System recommended and used by specialists worldwide- Medium resistance / strength, red, special rubber strap for training the extensor muscles- Includes 2 different rubber straps to adapt the Handmaster Plus to hand size and strength

For thin, medium and jumbo fret wires- Protects the fingerboard from scratches and dents during filing, crowning or polishing the frets- Fits most thin fret wires / medium fret wires / jumbo frets wires- Fits between all frets on guitars, banjos and electric basses- Fits between most frets of ukuleles and mandolins- Slot widths: 1.8 mm (5/64") / 2.65 mm (7/64") / 3.15 mm (1/8")- Slot length: 70 mm (2 3/4") - fits most 5-string electric basses- Notches for fixing with the enclosed rubber bands- Made of spring-hardened 0.2 mm (1/64 ") stainless steel- Adjusts to the fretboard radius- Set consists of 2 pieces including rubber bands and 1 x sanding block (sanding block with 1000 grit)- Dimensions Fingerboard Protector (L x W): 80 mm (3 5/32 ") x 16 mm (5/8")- Dimensions of sanding block (L x W x H): 100 mm (3 15/16 ") x 10 mm (25/64") x 10 mm (25/64 ")