Specification Brand : OUCRIY BulletPoint1 : Working Principles In The Opening Of Each Ball Has A Small Ball In The Rubber Tube, As Long As The Side Of The Ball Can Be Pressed Between The Ball And Rubber Tube To Form Gaps Between The Air And Out. BulletPoint2 : Made Of High Quality Rubber Material, Resistant, And To Use. BulletPoint3 : Be Careful Not To Draw The Solution Into The Ball. BulletPoint4 : Be Careful Not To Draw The Solution Into The Ball.Suction Ball Has 3 Openings Which Are Used By Elastic Rubber Force To Help Suck The Solution Into The Pipette. BulletPoint5 : High Quality:Made Of High Quality Rubber Material, Resistant, And To Use. Color : Blue IncludedComponents : NO ItemDisplayDimensions_Length : 2.17 centimeters ItemDisplayWeight : 0.57 pounds ItemName : Pipette,Industry Pipette Ball Suction Ball Lab Rubber Suction Bulb Quantitative Pipette Ball with 3 Openings Red Pipette Bulbvalves Red Clamp Filler ItemPackageDimensions_Height : 6 centimeters ItemPackageDimensions_Length : 15 centimeters ItemPackageDimensions_Width : 10 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : science-lab-pipettor-accessories ItemVolume : 1 cubic_centimeters Manufacturer : OUCRIY Material : rubber ModelNumber : OUCRIYv1iufe7ahg NumberOfBoxes : 1 NumberOfItems : 1 NumberOfLithiumMetalCells : 1 PartNumber : OUCRIYv1iufe7ahg ProductDescription : Feature: 1. Made of high quality rubber material, resistant, and to use. 2. Easy and convenient to use, help pipettes to draw liquid rubber ball. 3. Suction ball has 3 openings which are used by elastic rubber force to help suck the solution into the pipette. 4. Be careful not to draw the solution into the ball. 5. in the opening of each ball has a small ball in the rubber tube, as long as the side of the ball can be pressed between the ball and rubber tube to form gaps between the air and out.