These are 1 oz bottles of Liquid Rescue, formerly Liquid Bearings, 100%-synthetic oil with 3 needles included. It is superior for lubrication of all moving components and corrosion-prevention on all the metal surfaces of sewing machines. It is virtually odor-free, making it a pleasure to use, and leaves no scent on your machine or sewing material. Because of their nature, petro-oils and lubricant sprays leave sticky deposits and become gummy when they evaporate over time. In contrast, Liquid Rescue is made using a process that re-arranges the structure so all the molecules are uniform in size, shape, and weight, an ideal phenomenon which does not occur in nature. It is custom-designed to produce the ultimate lubricant, with inherent performance characteristics vastly superior to any petro-oil, and it never evaporates or becomes gummy! It is common to have long periods of time between uses of a sewing machine, and if it has previously been oiled with petro-oils or lubricant sprays, it will be sluggish and hesitant to operate smoothly when you first try it. As it warms up and is exercised it will slowly become more free-moving, but it will revert to the gummy feeling again as soon as it cools. Conversely when you oil your sewing machine with Liquid Rescue, it will come out of storage each time feeling silky smooth and ready to go at a moment's notice! It will run smoothly at ultra-slow speeds without stalling, which makes sewing so much more pleasurable! No other sewing machine oil can make this claim! It is completely plastic-safe for all plastics, and will not harm any painted surfaces. The bottle is top-quality soft LDPE, and the stainless applicator tips allows the application drop-by-drop, very precise. We always offer an anytime money-back guarantee, so try Liquid Rescue and you won't be disappointed, GUARANTEED!