Description: OOTDTY   brand new and high quality Feature: Made of high-quality ABS material, fireproof, durable, and has a long service life. It is anti-fall and anti-explosion with good stability. Mainly used for assembling 21700 li-ion battery. Very felxible, it is easy to assemble any type battery packs. Very simple to operation. Using this holder, we can make different battery pack , such as 12 v, 24 v, 36v battery pack, which can be used as electric bike battery, electric tools battery, storage battery and electric car battery, etc. Specifications: Item Type: 21700 3x5 Battery Holder Bracket Material: plastic Size: middle pitch 23mm/0.9in, aperture 21.75mm/0.8in Color: Black Quantity: 10PCS Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 10 x 21700 3x5 Battery Holder Bracket (other accessories demo in the picture are not included!)