CLEAR READING LINE - The scale of the dropper pipette is very precise, clear professional the calibration marks are easy to read. HIGH QUALITY - The pipette is made of high quality glass rubber , thick durable, the rubber tip is very thick firm, has good absption to keep liquid in the pipette. Technical data: pipette length: 20cm; Rubber cap length: 5.5cm width 3.5cm; Tip hole diameter: 1mm EASY TO CLEAN - you can remove the detachable pipette ball, then wash it with water let the pipettes air dry. Cleaning disinfection of these droppers is convenient quick, reusable better than plastic pipettes. WIDE USE - These calibrated glass pipettes to accurately transfer measure liquids such as reagents, water, oils essentials, spices, etc. Characteristics Total length (with blue rubber ball): 24.5 cm Length of the pipette: 20 cm Outer diameter: 1.3 cm Capacity: 10 ml minimum scale: 0.2ml We pride ourselves on offering the highest quality products. We offer MONEY BACK GUARANTEE If f any reason you are not satisfied, we will refund the purchase price immediately. Note: The rubber head should not come into contact with crosive liquids. When sucking up liquids, please place the dropper exactly above the vertical. After sucking up the liquid, the tip should not touch other objects to avoid contamination. Product in glass, please away from children. Scope of delivery: 3 x 10 ml glass dropper pipettes