MULTI-MONTI anchors are a innovative self-threading screw system, and are highly resistant and practical. The first part of the Multi-Monti thread is characterised by thread serration / teeth. When screwed, the anchor cuts into the material and creates the space for the rest of the screw. Unlike traditional screw anchors, the Multi-Monti system does not exert excess tension on the material, reducing the risk of damage or breakage. The Multi-Monti system also differs from traditional permanent mechanical or resin anchors in that it can be easily unscrewed and reused. This procedure should not be employed more than three times on rock and only once on granite.