1,Stroke length:71mm 2,Max. pulling force:8N 3,Running time:2-5S 4,Max loading: 35kgs 5,Life:50000 times. 1,Stroke length:71mm2,Max. pulling force:5N3,Running time:2-5S4,Max loading: 40kgs5,Life:50000 times.6,It's mainly use for the indoor sliding door,big drawer,wardrobe door etc.