Feature: 1. Made of high-quality PP material with higher strength and toughness, durable to use. 2. Two ends of the shell adopt fixed chuck design, more stable. 3. Suitable for almost all AAA batteries, turn AAA battery into AA battery. 4. Negative plate is flexible, so it can fits AAA battery with different length. 5. 4 AAA to AA battery converter in the package. Specification: Features: Made of high-quality PP material with higher strength and toughness, to use. Two ends of the shell adopt fixed chuck design, more stable. Suitable for almost all AAA batteries, turn AAA battery into AA battery. Negative plate is flexible, so it can fits AAA battery with different length. 4 AAA to AA battery converter in the package. Note: Battery is not included. Specifications: Product Name: AAA to AA Battery Converter Material: PP Item Size: 5*1.2*1.2cm / 1.97*0.47*0.47in Item Weight: 3.5g / 0.12oz Package Size: 6*5.5*1.5cm / 2.36*2.17*0.59in Package Weight: 14.4g / 0.5oz Color: White Packing List: 4 * AAA to AA Battery Converter Package List: 4 * AAA to AA Battery Converter