Smooth Ended Stirring Sticks For Kitchen 4-Pack Glass Stirring Rods With Round Ends 10mm For Lab Science Kitchen In Laboratory Craft: Each glass stirring stick has been polished,so each has rounded and smooth ends. KNMNIU 8 Pcs Glass Stirring Sticks,4mm Lab Stir Rod 7.9" Length with Both Ends Round for Science Lab Kitchen Science Share Reusable:The stirring rod is reusable and washable, please wash and dry it after use for next time use. These stir rods are what I'd expect; they were packaged well, they're the correct size, the ends are smooth, and are made of durable borosilicate glass. They stir my ethanol and dihydrogen monoxide solution well, and you get enough to keep your guests happy The stirring rod is reusable and washable, please wash and dry it after use for next time use., ➤Material: 3., 3 Borosilicate Glass; ➤Color: Clear; ➤Size:4x150mm/4x200mm/4x250mm/4x300mm; ➤Package included:8 x Stirring Rods Widely Used: glass stirring rods can used for chem lab, for making essential oil blends with salves and creams, for mixing of cosmetics and herbal mixtures, for stirring your hot coffee or any other beverage. Laboratory Glassware Borosilicate Glass Stirring Rod Stir Bar For Lab Sturdy and Durable:The stick is made from borosilicate glass, good resistance to acid, alkali and high temperature, and its strength are higher than ordinary glass.