Female Thread Brass Knurled Inserts Nut Heat Set Insert Nuts Embed Parts Pressed Fit into Holes for 3D Printing M2 M2.5 100Pcs Size:M2.5X4.2X5.0 which surprised me given the

which surprised me given the price

Feature 4: Moisture Proof This product does not contain batteries

1 x Humidifier

and it will only heat up after pressing it down

1* Humidifier

Female Thread Brass Knurled Inserts Nut Heat Set Insert Nuts Embed Parts Pressed Fit into Holes for 3D Printing M2 M2.5 100Pcs Size:M2.5X4.2X5.0 which surprised me given theOrigin: CN(Origin) Certification: NONE DIY Supplies: Metalworking is_customized: Yes Material: Copper Type: Thick Nuts Name: Knurled Hot melt Insert Nut Material: Brass Color: Golden Standard: GB Package: Bubble pack Surface Treatment: Untreated Size Form: MxDxL ( M is the nominal diameter, D is the outer diameter, L is the length. )