Motion Pro Jumbo Chain Tool. Jumbo-sized chains call for the Jumbo Chain Tool. Use it to break or rivet roller chain sizes 520 through 630 and No. Works as handheld tool, in a vise or bolted to a bench.An air impact driver with a 9/16 in. Socket may be used when the tool is bolted to a bench. The item "Motion pro jumbo chain breaker and press fit rivet tool" is in sale since Monday, April 30, 2018. This item is in the category "Vehicle Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Cylinder Heads & Valve Covers". The seller is "pcmotoparts" and is located in KENT. This item can be shipped worldwide.