50 PCS Butter Machine Head Copper Universal Steel Tip Pneumatic Oil Grease Nipple

1. Pure copper oil steel tip, high hardness, good toughness, not easy to rust
2. Hexagonal interface, fine thread, precise and durable
3. Small pitch, good self-locking, seamless connection, not easy to leak oil
4. Precision instrument lubrication, good penetration
5. Material: copper
6. Size: about 3.4x1.2cm/piece
7. Weight: about 10g/piece