10PCS Ring Spring 231907-1 Replacement for 6904VH 6905B 6911HD 6918D 6918FD 6931D BTW150 BTW151 TW0 COMPATIBLE WITH MULTIPLE MODELS: This Ring Spring (Part Number 231907-1) fits a wide range of models including 6904VH, 6905B, 6911HD, and many more, ensuring compatibility with your equipment. [STURDY METAL CONSTRUCTION] Made from metal, this black Ring Spring is designed to withstand wear and tear while providing reliable performance. [ OPTIONS] Available in single or double quantities, you can choose the right amount for your specific needs without any hassle. [ FOR VARIOUS APPLICATIONS] Whether for machinery repairs or maintenance tasks, this Ring Spring is perfect for both professionals and DIY enthusiasts alike. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.