The Borum Hydraulic Bead Breaker is designed to work on most rims up to 26".  It is expressly intended to be used as an aid in breaking bead seal between a tyre and it's one, two or three piece wheel for the purpose of resealing bead seal, replacement of tyre or wheel, replacing tyre valve, tyre tube etc.  The bead breaker works directly on the bead of the tyre and will not damage the tyre if used correctly with the optional Tradequip 2054 10,000 psi air/hydraulic pump.