in the TANOS MINI-systainer® (sturdy plastic box), T-Loc lock for one-handed operation: open or close the systainer® with a turn and connect it to a second systainer®, open in the linked state: access the content easily and quickly, without to loosen the connection, two stackable plastic inserts, each with six recesses for connectors, with an assortment of ferrules with or without plastic collars, with crimping pliers for ferrules, ferrules without plastic collars