1.This product includes silicone reservoir, silicone flat drains or other silicone drains and stainless steel trocar. 2.Can use separately or using trocar for insertion and combining with silicone reservoir for fluids suction and collection. 3.Used for various surgeries. Size (ml): 100, 200, 400 Package: Plastic-paper pouch, sterile Pcs/ctn: 100ml: 96pcs/ctn (59*41*35cm) 200ml: 80pcs/ctn (59*41*35cm) 400ml: 40pcs/ctn (59*41*35cm)