Made of high quality plastic, keep the batteries in place safely, the spring is made of steel and ferrite.
Battery Type: 1.5V AA battery；Material: Durable plastic and metal.
Metallic spring for easy install and convenient for electric circuit DIY work.
Great items for keeping your standard or rechargeable batteries together and safe.
Durable enough springs hold batteries to the contacts without any loosening, these parts will be the best partner of your daily use.