These are the small hole couplers.
Note: THESE ARE NOT STANDARD COUPLERS. For those see this listing:
https://www.ebay.com/itm/313169684823?mkevt=1&mkcid=28&chn=ps

The couplers are made in the USA and have been manufactured through Fused Deposition Modeling. 
 We offer fast shipping! Shipped the same day or next day with USPS shipping. . 

We offer a 60-day money back guarantee here on eBay. If you have any problems with the couplers over the 2 month period or just don't like them - feel free to use eBays Money Back Guarantee program and we will issue you a FULL REFUND.
 
We offer an unlimited quality guarantee!  If for any reason you have problems with the couplers after eBay's return deadline we will send you out a new set of couplers at no charge! Just message us with your previous order number so that we can address your replacement couplers correctly. 

If you have any issues with the couplers or your order we will work with you to resolve it. We stand behind our product. The couplers are stressed tested and are extremely durable. 

30 Horn Hook Style Couplers are included with each order!

USPS Shipping notice: We ship the same day or the next day with all orders unless a vacation stop is noted. Unfortunately, our local USPS has not been regularly scanning the packages. Meaning you will not see tracking information until it is out for delivery in some cases. It will show it is Pomona Ca sometimes for the entire shipping period. Rest assured that if USPS does lose the package we will issue a full refund and also ship out a new set free of charge to you – for the delay. Although it is the fault of USPS we want everyone to be 100% satisfied with our service. We ask for patience with your order and to understand that this is out of our control.