When you have a flat tire and the hole is too large to seal with the tubeless sealant in your tires, the Muc-Off Stealth Tubeless Puncture Plug is the ultimate tool, cleverly stored in your bar ends! The expanding silicone plugs fit most sizes of MTB, road, and gravel handlebars and are also included. The premium CNC-machined aluminum bar ends are available in 10 anodized colors, so there's always a color to match your bike. Each lightweight and durable set includes everything you need to get back on the road. Expanding silicone plug fits most MTB, Gravel Road handlebars with an inner diameter greater than 17mm Supplied with 17mm, 19mm, and 21mm silicone plugs for different handlebar diameters 1 x stainless steel 2-in-1 puncture plug / reamer 1 x trimming blade tool Supplied with 5 x thin plugs, 5 x medium plugs, and 5 x thick plugs. Supplied with 5 x thin tyre worms, 5 x medium tyre worms & 5 x thick tyre worms Plugs and repairs multiple holes that won’t seal with just sealant