, sufficient, quality guaranteed, welcome to purchase, daily production over 4000 sets This item is a set of 11 dog leash clips, each weighing approximately 0.43KG, packaged in a black storage bag 50 sets per outer box, outer box size 57*40*42CM, approximately G per piece Option 11-piece set standard: 2 foam handles, 2 foot covers, 1 foam door stopper, 1 black storage bag, 5 tension ropes Yellow corresponds to pulling force of 10LBS Red corresponds to pulling force of 15LBS The corresponding pulling force for blue is 20LBS Green corresponds to a pulling force of 25LBS Black corresponds to a pull force of 30LBS, totaling 100LBS. Some customers call it 150LBS, but for beginner workouts it's actually the same. You can go for the thicker version at 150LBS The pipe meets the standard