Features: OOTDTY   brand new and high quality Small size,easy to carry. Best for soldering/connecting. It is durable and convenient. High frequency low loss easy installation. Made of ABS+Metal, which is reliable. Specifications: Material:ABS+Metal Color:Black Package Includes: 10x CR2032 Battery Holder Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.