Brand new designed and manufactured by CZ Industries INC – made in USA MichiganDON’T ROUND-OFF YOUR FITTINGS WITH ADJUSTABLE WRENCHES, LOOSE TOLERANCES OR ANODIZED WRENCHES – READ BELOWOUR WRENCHES ARE MADE TO STRICT AN TOLERANCES, UNFORTUNATELY NOT ALL MAKERS OF AN FITTINGS FOLLOW THE TOLERANCES SO OUR WRENCHES MIGHT NOT BE AN EXACT FIT. WHEN THIS OCCURS, MOST THE TIME THE FITTINGS ARE OVERSIZED MAKING OUR WRENCHES TOO SMALL, WE RECOMMEND MEASURING THE FITTINGS AND SCROLL DOWN TO OUR TOLERANCES. THESE WRENCHES ARE MADE OUT OF ALUMINUM SO THEY CAN BE OPENED UP WITH A FILE FOR EXACT FIT!!! If we would loosen up the tolerances – made wrenches bigger – wrenches would be more prone to round corners of the fittings made to correct tolerance.Please review our feedback on this and all our items regarding our delivery, quality and customer support – we are proud of it.We have sold over hundred of these wrench sets and over 500 of our smaller set with very satisfied customers…. AN Double Sided Combination Wrench Set: AN3, AN4, AN6, AN8, AN10, AN12, AN16, AN20 (total of 8 wrenches)AN fitting combination wrenches. These wrenches are designed and manufactured out of 3/8″ thick billet aluminum not to damage your fittings. Each size is found on different wrenches, which allows you to hold the adapter with one wrench and loosen the hose with another. Each AN size includes a 90 degree open box end and a 180 degree open box end. Fits both Aluminum and Steel AN fittings.Manufacturing tolerances are held to AN fitting standard received from Parker. We can not predict if your AN fittings comply with standards but they should. Also, we have following specification that will allow you to verifythat these tools will work with your fittings. We inspect every wrench to ensure they meet following specifications.Wrench openings are as follows: AN3 – 0.505″ up to 0.510″AN4 – 0.568″ up to 0.572″AN6 – 0.693″ up to 0.698″AN8 – 0.880″ up to 0.885″ AN10 – 1.005″ up to 1.010″AN12 – 1.255″ up to 1.260″AN16 – 1.505″ up to 1.510″AN20 – 1.818″ up to 1.823″ Constructed 100% out of 6061-T6 aircraft aluminum – CNC machined Very well made, high quality.Why our wrenches are not anodized: Anodizing process creates hard coating on the surface of aluminum that could potentially scratch / damage your fittings.These wrenches are not sold separately, when purchased you will receive the entire set of wrenches showed in the pictures.Shipping information: Regular shipments are Monday through Thursday (except holidays – we would ship next available business day). Shipping and Handling Charges: Please note that we do not charge anything for handling and when you receive your package postage paid to USPS is printed on our labels and it will match to a penny what you have paid to us – no hidden cost or extra charges in shipping and handling from us at CZ. International buyers Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying. Damaged Item, Wrong Item IssuesIf you received a damaged or broken item, please email us immediately so that we can help you to get a new item at once. Customers are required to send a email with the nature of the problem, and we will contact you within 24-48 hours. If you can please send a digital picture of the item. Lost / Damaged in transit items: Please allow 14 business days for carriers to process the claim. We will only reship when we have received confirmation of approval from carrier. If the customer finds that the item is an incorrect item and/or some of the parts are missing, please contact us immediately. We will be responsible for the return shipping and reshipping fee if we made the mistake. If the customer made a mistake and would like to return item – customer is responsible for return shipping charges and original shipping charges. We will return original price paid minus shipping after receipt of our item – no questions asked. Please include your receipt with our item and retain your tracking number. Item has to be in new never used condition – or condition purchased.Customers MUST contact us within 14 days after the date of package arrival via email for all claims of shipment damage, defects, missing parts. No claims will be accepted after 14 days We will leave you feedback after payment is received and we hope you do the same for us after you receive your item. *Scale in pictures not included. CZ Team