Muc-Off B.A.M! pumps and repairs simultaneously by injecting latex foam and air into the tyre or inner tube. The B.A.M is the perfect emergency support that can be attached to your bike frame or stowed in your backpack with the new Muc-Off B.A.M Utiliy Belt (sold separately). It is compatible with road, road/gravel and MTB wheels as well as most tubeless sealants. It inflates a 29" MTB tyre in less than a minute and is capable of sealing 3-4mm holes.