Ninja Balls accessory for Ninja Line
Ninja balls are one of the best accessories for developing grip strength in forearm muscles.
The kit contains 2 rough round Ninja Balls approximately 6.35 cm in diameter (size of a tennis ball), 2 triangular galvanized steel carabiners and 2 straps of 20 cm x 2.5 cm.
You can attach them to a slackline or individually
The maximum load capacity is 113kg
