This convenient combination folding lock offers the security of a U-Lock with the flexibility of a chain. The brood combo 6100 offers Abu's level 9 (medium) security in this easy-to-use light weight lock. Made of Temper hardened steel, the bars are encased in an extra soft coating to protect your bike's paint job. The lock body, links and supporting elements of the locking system use the same high quality steel you'll find in the bars. The brood combo 6100 allows users to set their own combination and the combination dial features two-component molded digits for guaranteed life-long readability. The combination style lock is especially useful for use by multiple riders sharing a single lock.