Features High strength and toughness, not easy to break, can be used for long-term work. Accuracy threads can match each other perfectly. These spacers, bolts and nuts are all made of brass, durable and corrosion resistant. These M2 spacers have different sizes to meet your different needs. All these parts are integrated into a box for convenient access and storage. Specification: Item type: standoff. Material: brass. Thread type: M2. Package list: Pack of 25 female plug spacers M2 x 5+3 Pack of 25 female plug spacers M2 x 10 + 3. Pack of 25 female plug spacers M2 x 15 + 3. Pack of 25 female plug spacers M2 x 20 + 3. Pack of 25 Female Socket Spacers M2 x 5 Pack of 25 Female Socket Spacers M2 x 10 Pack of 25 Female Socket Spacers M2 x 15 Pack of 25 Female Socket Spacers M2 x 20 Pack of 60 cross head screws made of brass M2 x 5. Pack of 60 brass hex nuts M2. Package List