A crimping profile for cross-sections of 0.14 - 10 mm² through automatic cross-section adjustment. Suitable for terminal blocks. Spring-assisted tool opening. With a locking mechanism for uniformly controlled crimping results. Front insertion of sleeves (front crimping). Ergonomic handles with slip protection. Features: quick switching between front sleeve insertion and side sleeve insertion, serrated crimping insert for optimal extraction values of the crimp connection, with a locking mechanism for uniformly controlled crimping results, with a safety eyelet for attaching a safety rope, ergonomic design with a small hand opening angle and balanced weight suitable for push-in, spring clamp, and screw technology.