The MESTRA model trimmer is a strong and robust machine, featuring the latest improvements and innovations required by a machine of these characteristics. Its robustness can be seen at a glance and its weight of more than 21 kg (maximum on machines of this type) added to the use of non slip rubber feet assures perfect stability during facing operations. It runs noiselessly as the special resin wheel is carefully balanced. The wheel is mounted on an aluminium plate, thus achieving a larger working areea as it has no shaft or external nut hinder grinding operation in this area. The motor is provided with guards, giving a more compact and harmonious appearance, while ensuring safe operation, reventing any possible accident. The MESTRA trimmer is equipped with an electrovalve for electronic feed of water by pressing a switch. This switch is protected with a PVC insulating cover to prevent any electric shock due to humidity. It is also provided with an earth cable. Water flow is directly adjusted from the machine through an adjustment valve.