
During the Brexit transition, we have noticed a small number of issues with customs charges, if you think you are affected please get in touch with us before paying it. Continue to buy with confidence and be assured that we have implemented a plan which aims to ensure the least disruptive and cost-effective solution for our customers, your patience during this time is much appreciated.
The couplings are designed to take 4mm OD tubing and the plastic ring is designed to be inserted into a 12mm hole at least 7mm deep.
Dimentions for the outer ring:
Dimentions for the insert: