The IM4P is the largest diameter in Mectron's implant preparation tip range: at 4 mm, it is used solely to finalise site preparation, with no intermediate widening function. It includes a double irrigation system that dissipates the heat generated by bone drilling, an important consideration at such a large diameter, particularly in the posterior regions of the maxilla. Made for Mectron Piezosurgery handpieces, it features a titanium nitride coating that increases wear resistance, and is reusable after sterilisation like the brand's other surgical tips.