1. Model Number Breakdown:

• "20" – Likely refers to the diameter of the pump's neck finish (e.g., 20mm), which determines the bottle opening size it fits.

• "410" – Typically indicates the actuation (stroke) height in millimeters (e.g., 4.10mm), which affects the amount of product dispensed per pump.

2. Key Features:

• Material: Usually made of PP (polypropylene) or PE (polyethylene) for durability and chemical resistance.

• Dispensing Mechanism:

  • Cream/lotion-specific design (thicker viscosity compared to liquid pumps).

  • Smooth, controlled dispensing without clogging.

• Locking/Child-Resistant Options: Some models may include a twist-to-lock feature.

• Output Volume: Typically dispenses 0.5ml to 2.5ml per pump (varies by design).

• Cap Options: May come with a flip-top cap or overcap for hygiene and spill prevention.

3. Common Applications:

• Facial creams

• Body lotions

• Medical ointments

• Hair care products

4. Compatibility:

• Fits bottles with a 20mm neck finish (standard for many cosmetic containers).

• Works best with viscous formulations (not for watery liquids).