The Solid Plus is a strong ring lock with a plastic body. The lock bracket is made of hardened steel. The ring lock is easily attached 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 Weight: 690 grams Lock: keys Mounting: frame Contents: 1 Ring lock 2 keys