This filtration kit comes with a 70mm (inner diameter) porcelain buchner funnel, a heavy duty 500ml filtration flask, a rubber filter aid, and 70mm filter paper. The filter aid is versatile to fit a variety of funnels and flasks. The standard filter paper shipped with this kit is qualitative, fast, 7.0cm diameter filter paper. If you would like any other speed or variation, inquire below. Texas Residents: Under Texas State Law, this product requires a Precursor Chemical/Laboratory Apparatus NAR-120 permit to ship to a Texas address. After purchase, the seller will contact you via email to verify your permit. Failure to provide a valid permit will result in a cancellation and refund of your order.