24 batches of heads are hung to prevent loss and facilitate storage. The screwdriver bit can be taken out after the metal clamping groove is hung on it and turned up by 180 degrees. Benchmarks are marked with specifications for easy identification of models. The batch head is precisely machined to fit the screw hole better. Made of aluminum alloy and steel, , suitable for mobile phones, tablets, digital, home appliances. Describe Name: screwdriver combination set Specification: 25 in 1 Material: aluminum steel Color: As Shown Package Contents: 1 x Screwdriver combination set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.