c4 电动螺丝刀批头收纳 ：

极简螺丝刀批头收纳，批头型号C4*28，适合批头对边长4mm的批头，如小米电动螺丝刀，一共25个孔。孔径逐渐缩小，起到固定作用，不会随意滑出来。

Electric screwdriver c4 batch head storage：

Minimalist screwdriver bit storage, bit model C4 * 28, suitable for bit lengths of 4mm on opposite sides, such as Xiaomi electric screwdriver, with a total of 25 holes. The aperture gradually decreases, providing a fixing effect and preventing it from slipping out randomly.