Let AIR take care of the challenge Skilled users know the challenges of floor grinding, to create excellent results. When grinding and polishing to high specifications of hard materials like hard concrete, terrazzo and stone materials one major risk factor is glazing. Glazing or over heating resulting in damaged tools causes poor cutting rates and shorter tool lifetime. The raised temperature is caused both by friction and the concentrations of dust under the grinding cover which accumulates the heat and raises temperature. It generally takes a lot of operator skill to adjust the machine and to balance performance and risk of overheating. AirFlow™ EZ tool holders create an increased and controlled flow of air around the tools. The increased air flow cools the tool effectively and at the same time directs the air born dust towards the evacuation intake. Longer expected tool lifetime Reduces working temperature Maximize cutting rate More effective dust removal Double functionality that makes difference The increased and controlled air flow cools the tools effectively and at the same time directs the air born dust towards the evacuation intake. CAUTION AirFlow™ may ONLY be used with HTC EZchange™ original tools. Other use may cause damage and will violate any given warranty or other claims. Tool holder AirFlow™ EZ 230 Item Number: 510002 AirFlow™ tool holder made in cast aluminum. 230 mm version fits HTC 650 HDX/RX and HTC DURATIQ 6. Tool holder AirFlow™ EZ 270 Item Number: 510001 AirFlow™ tool holder made in cast aluminum. 270 mm version fits HTC 800 HDX/RX, HTC DURATIQ 8 and HTC 950 RX.