Replacement cartridges (threaded) for BBB AirSpeed, EasyAir and CO2Blaster. Volume of 25 gram. Perfect for inflating a MTB tire. A single cartridge inflates one 29" x 2.45 MTB tire up to 2.2bar / 30psi. - BMP-38 / 2949613801 Part Number: 2949613801 Barcode: 8716683066777 Product Code: BMP-38