Piercing spike, micro smooth acc is made of ISO standards. It has an integrated and closable breath vent with hydrophobic bacteria. Unique Features Item Precision Roller: The item has a Precision V roller clamp. Free DEHP Free: It is PVC free or DEHP free PVC. Product Fluid Filter: Product has 15 m fluid filter acc. Device Transparent: Device has a transparent drip chamber, with light protecting relocatable cover.