Boss Series Train Horn for Ryobi® 18v Battery Color:Red click on one of the

click on one of the Ryobi® 18V packs from your drill kit

No mounting brackets

and simple enough that anyone in the family can run it

Just attach any Milwaukee® M18 battery and you're ready to go

The Extreme Series is how you become that crew

Boss Series Train Horn for Ryobi® 18v Battery Color:Red click on one of theOdds are there's a drawer in your garage with three or four Ryobi ONE+ 18V packs waiting for a job the same packs that run your drill and impact driver all week. The Boss Series gives them their most entertaining assignment yet: a cordless, battery powered handheld train horn that pushes up to 150 dB through four long metal trumpets. No installation, no mounting brackets, no wiring weekend click on a battery you already own and the whole neighborhood