The Solid Plus is a strong ring lock with a plastic body. The lock bracket is made of hardened steel and is 8.5 mm thick. The frame lock is has an extra wide opening of 58 mm, making it suitable for bikes with wide tires. The ring lock is easy to attach to the rear frame with lock parkers (not included) and has a plug-in option for a plug-in chain or a plug-in cable. Specifications: Color: black Material housing: plastic Material inside: steel Hallmark: ART** Plug-in possibility: yes Width opening: 58 mm Thickness of lock bracket: 8.5 mm Height: 107 mm Weight: 630 grams Lock: keys Fastening: rear fork Contents: 1 Ring lock 2 keys