The Tubi Master RX by Topeak is a compact frame tube mount that serves as a multi-function tubeless tire repair and CO2 inflation kit. This kit includes the Nano AirBooster CO2 inflator, TubiCartridge R16, and one 16g CO2 cartridge, specifically designed for road bikes.The Tubi Master RX comes with an adjustable nylon strap for easy attachment to seatposts or bike frames. The mounting module also features a grip strap for added stability.Included in the kit are the Nano AirBooster CO2 inflator, TubiCartridge R16, and one 16g CO2 cartridge. The inflator head is made of CNC aluminum and is compatible with both Presta and Schrader valves.The Tubi Master RX is designed to be versatile in its mounting options. It can be attached to seatposts, bike frames, or tubes using the adjustable nylon strap.This kit also features a mounting module with a grip strap, providing additional stability when attached to seatposts or bike frames.The Tubi Master RX measures approximately 8.9 x 6.8 x 5.4 cm (3.5"" x 2.7"" x 2.1"") and weighs 154g (5.43 oz).