The Dremec 8GG01V42121 is a screwed spacer sleeve made from polyamide 66, with a hexagonal design and UNC 4-40 threading. It is a lightweight component which can be used to join multiple components securely, such as screws and bolts. It is used in many industries including automotive, electronics, machinery, and construction. It has good impact strength and can be easily formed into various shapes and sizes. Additionally, this component is resistant to corrosion, weathering, and most chemicals.