... stainless steel is 201,304,316;MaterialstandardSpider Types regular spider, handrail usage spider, fin spiderSpecification (reference)Arms: 4arms,3arms,2arms, ... delivery. Quality assured.If you have any question, please feel free contact me. Packaging & DeliveryPacking Detailsbubble bag, standard carton, ... If you are interested in our products. Please feel free to contact with us,we will try our best ...