Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to remove a bike chain [title] Get a chain tool. [step] A chain tool is a small, handheld tool with a rotating handle and metal pin that pushes the rivet out of a chain link so it comes apart. You can find a chain tool online or at your local bike shop.

Ending1: [substeps] If you're getting a chain tool, you'll have the tool on one side of the chain tool, and a ring with a seal around it on the other. Without a ring, the chain tool won't be able to pull free the chain tool, if it doesn't break through the ring. Ending2: If it doesn't come with a chain tool on it, you can buy a smaller one. [substeps] Most chain tools have a small notch or a locking mechanism located under the blade where the chain is stuck. Ending3: [title] Insert one of the links on your bike chain into the chain tool. [step] The chain tool should have 2 prongs on it (next to the small metal pin) that will fit around one of the links on your bike chain. Ending4: [substeps] Your chain tool and the other metal pin should come with you when you pick up your bike chain. [title] Lay the tool flat on a table.

Answer format: ending1/ending2/ending3/ending4