The outer layer of the roller is very grippy and is suitable for use on sports courts, wooden or concrete floors. Also suitable for sports halls and rubber, as well as wooden floors. Indoor roll for many indoor coverings. This roll is the original roll on various Bauer inline skates. Type: indoor hockey hardness: 76A colour: black-transparent bearing insert: 608 / standard. Box contents: pack of 4. Manufacturer: Bauer