Features: 1. Made of high quality plastic materials, it is not easy to damage and has a long service life. 2. Reliable garden tool trimmer replacement accessories, high reliability and easy to use. 3. Easy to install and replace, the old one can be replaced directly, which canextend the life of the machine. 4. The plastic material has the characteristics of wear resistance and durability, without frequent replacement, and more convenient to use. 5. Suitable for STIHL TS410 TS410Z TS420 TS420Z, please pay attention to the model when purchasing. Specification: Item Type: Primer Bulb Material: Plastic Weight: Approx. 41g/1.4oz Suitable for Stihl TS410 TS410Z TS420 TS420Z Etc. Replacement Number: 4238-350-6201 Package List: 5 x Primer Bulb Features High-Quality Material: Made of durable plastic, this primer bulb is built to last, ensuring long-term reliability and performance. Easy Installation: With its simple design, this cut-off saw accessory is easy to install and replace, allowing you to quickly get back to work without any hassle. Extended Machine Life: By replacing the old primer bulb with this high-quality accessory, you can extend the lifespan of your STIHL TS410, TS410Z, TS420, or TS420Z, saving you time and money on frequent replacements. Wear-Resistant and Durable: Crafted from wear-resistant plastic, this primer bulb is designed to withstand heavy use, providing you with a durable and reliable tool for your garden trimming needs. Compatible with Multiple Models: Specifically designed for STIHL TS410, TS410Z, TS420, and TS420Z, this primer bulb is a perfect fit for your trimmer, ensuring optimal performance and compatibility.