ITEM NAME:12V DC suction micro electromagnet spring push pull type rod solenoid magnet M& Product Description 100% Brand New and High Quality Different customer requirements, so the default.4mm Stroke Penetration Push Pull Type Mini Solenoid Electromagnet. 1 x Push Pull Type Micro Solenoid Electromagnet. Stroke: 4mm. Current: 120 mA. Weight: 11 grams.