Quality Assurance: advantage from our advanced equipment and quality testing standards. Our aim is to bring you cost-effective, quality products that meet and exceed your expectations. Superior Material: Constructed from premium copper, these bus bars are nickel-plated to offer exceptional chemical and resistance. Assure and reliability with our high-quality bus bars in your DIY battery projects. Thank you very much: Thank you very much for choosing this product : The hole distance of 74mm is equivalent to the width of one battery, ensuring a snug fit and connection for your solar power storage, enabling efficient energy transfer Wide Applications: for Lifepo4 batteries DIY CATL 271Ah/280Ah/310Ah, 272Ah, and EVE 280Ah, they also work well for 12v 24v lithium battery capacity above 250Ah battery cells. Our bus bars add flexibility and durability to your battery setup. Material: Copper colour: As Shown Package Contents: 8 x Battery connector flexible busbar copper plate 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.