Product Description Chain whip in innovative design for removing sprockets. Suitable for 6-12-speed cassettes. Technical Information:Length:300 mmCompatibility:6-/7-/8-/9-/10-/11-/12-speedManufacturer Number:BM17-SPRO-WH Contents:1 x Birzman chain whip Manufacturer: Birzman No. 8 Gongye 1st Rd. Dali Dist. Taichung City 412 Taiwan info@birzman.com Distributor: Sports Nut GmbH Au-Ost 3/1 72072 Tübingen Germany contact@sports-nut.de