This kit contains the needed materials to take 3 samples. Included are 2 bellows type bottles which suck a sample out through the dipstick tube and 1 gravity type bottle to catch a sample as the oil drains. note: The Image shown is a single Regular Bottle Oil Analysis Kit. Due to space limitations I can only include a single image. All of my packages that include a Gravity Kit will only show this image. Please check one of my Bellows Kits for an image of those Kits.