Segway ninebot external battery mount es1, es2, es3, and es4 external battery mount & hardware application: battery mounting bracket. suitable for ninebot es2 scooter. with screws: the screws is to be attached the rail to the downtube. fixing: stainless steel bolts is to be attached external battery to rail. easy install: with rubber bolt hole cover plugs. simple to install. package included: 1pc x battery mounting bracket 1 bag x screws