Faceted Low Profile Reduction Adapters


(5 customer reviews)

Reduction adapters allow you to change your rig’s joint size to accommodate a wider range of accessories. Our low-profile design allows you to reduce your joint size without a noticeable adapter so you can quickly and cheaply change out accessories. The top of the joint is faceted to give a more elegant appearance. Made out of borosilicate glass. Available in the following colors: clear, teal, blue, green, and pink.

Available Sizes

  • 18mm Male to 14mm Female (Converts 18mm to 14mm)
  • 14mm Male to 10mm Female (Converts 14mm to 10mm)

Note: Reduction adapters shrink the joint size, not the joint sex (ie. from male to female). 

Use up to 300 - 360 TerpTokens to purchase this product!


Glass adapters can convert one gender to another gender, convert one size to a different size, or just give you the flexibility to customize your piece using an accessory such as a reclaim catcher. Glass smoking accessories often have three standard joint sizes: 10mm, 14mm, and 18mm. Joints are gendered into two categories: male and female. Male pieces fit into females and females fit into males.


Free shipping on all US orders. Orders will be shipped within 1-2 business days in discrete packaging. You will receive a shipment confirmation email with your tracking number(s) once your order has shipped. If you need to cancel/adjust your order, change your shipping information, or have other requests, please contact us via phone at (831) 200 – 3549 or email us at support@terporium.com immediately as orders are processed quickly.

All orders within the United States are shipped via USPS First Class or Priority Mail (depending on the size of your order). International orders are shipped via UPS. At our discretion, orders may require a signature confirmation. 


If you are not satisfied with the Terporium product you purchased, we can refund the product’s purchase price if it is returned within 30 days of its arrival at the shipping address. You will be responsible for return shipping. You are only eligible for a return if your item is unused and in the same condition that you received it. At the sole discretion of Terporium, you may receive a partial refund on used or slightly damaged products. All 2nd quality quartz are final sale items, meaning they are not eligible for returns unless damaged in shipment to you, defective, or incorrect. You must return your item in the original packaging (if applicable).

If your shipment is damaged, missing, incorrect, etc., promptly email support@terporium.com for return/refund/exchange instructions. Please include your order number and a photo (if applicable). 

To return your item, please include your order number inside the box and a brief description (i.e., refund or exchange for ____ size/color). Please ship products eligible for return to the following address: PO Box 305, Aptos CA 95001.

5 reviews for Faceted Low Profile Reduction Adapters

  1. diekowryan (verified owner)

    For the price difference between a standard quartz reducer, or this faceted & colored one!? Its a no-brainer. You have to choose this. The cuts look great and theres a few different color options to choose from.

  2. Lou (verified owner)

    Most beautiful reductor ever made!! So beautiful in person

  3. rastadrewbie (verified owner)

    Love the color, product quality, and Design. Would recommend for anybody needing a glass adapter.

  4. stewartn676 (verified owner)

    love the faceted edges its much easier to grab.

  5. Dylan Nguyen (verified owner)

    Love the teal color I got. 10mm>14mm

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