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![HID® iCLASS™ RWK400 Read/Write Reader [6131]](https://cdn.shopify.com/s/files/1/1461/0740/products/rk40_blk_6130_6138_6139_1_52f04441-82e9-496e-8b23-e041cbe4d98c.png?v=1495097136 "HID® iCLASS™ RWK400 Read/Write Reader [6131]")
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Ships within 48 hours · Estimated delivery Jun 14 - Jun 19
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Description
Comfort Zone Calming DiffuserComfort Zone Calming Diffusers contain 2X more calming pheromones vs. competitors. Our Calming Diffusers release a drug free vapor for up to 30 days that mimics a cat's natural calming pheromones to create a calming environment which helps reduce your cat's stress response behaviors like destructive scratching and urine marking. Winner of the Cat Care Category from a survey of 40,000 people by TNS. USE FOR: Scratching Urine Spraying General Stress
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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![SDK ICAR® IDFraud™ Basic [EL-ICAR-IDFRAUD-B]](https://cdn.shopify.com/s/files/1/1461/0740/products/icar_cd_51d398da-b6b4-432c-97f4-a8f880adb657.png?v=1495097272 "SDK ICAR® IDFraud™ Basic [EL-ICAR-IDFRAUD-B]")
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4.5 ★★★★★
Based on 1840 reviews
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Product Reviews
★★★★★ 5
Fits with my Sergand pen!
These fit perfectly with my Sergand pen! Best price I could find on Amazon! I use on my face and they make for a perfect at home microneedling.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 5
36 pin micro needle cartridges.
My favorite microneedling cartridges. They are reliable and have never let me down.
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Excelente
Los amé tal y como recuerdo haberlos comprado
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Cartucho
Son buenos y accesibles
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Excelente
Buenismos
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Reviewed in the United States on May 3, 2026
