Lock up your prized bike with peace of mind when you use Giant's SureLock Force 2 Chain Lock. This beefy lock uses 8mm-thick titanium-enforced steel links with a heavy-duty double-locking cylinder lock that provides high cut resistance. The high security, pick and drill-resistant lock cylinder uses a laser-cut key for the ultimate in protection. Encasing the chain is a water and heat-resistant cover that won't scratch your bike's finish.