The Product Is A Sturdy 1 Lb Propane Tank Refill Adapter That Can Be Used For Product Features Make Disposable 1lb Propane Cylinders Reusable: Alloxity propane refill adapter for 1 lb. tanks allows you to refill 1lb propane tanks in an easier more efficient way. In comparison to those traditional propane refill adapters, Alloxity propane refill hose is equipped with a shut-off control valve which help you control the refill process easily, no more fiddling with large propane tank valves; Designed for Efficiency Safety: Precisely engineered from 100% Brass, both connectors of the propane refill adapter hose ensure a seal connection for consistent gas flow during propane refilling. Alloxity propane refill adapter can easily connect 1lb green bottles to 20-50lb tanks and refill multiple 1lb cylinders at a time, saving your time trouble; Enhanced Quality for Better Durability: Providing excellent wear resistance, each Alloxity 1lb propane tank refill adapter is made from high quality rubber to ensure your safe leak-free operation. Adopting a 3-layer hose construction, all Alloxity propane refill adapters were tested and meet all strict quality standards to ensure safety durability: Refill Instructions: Chill Empty 1lb Cylinder while warm up large tank in the sun; Screw the black-end connector to the Large Tank; Open the large tank?s valve and invert it; Open the hose valve to bleed air out; Thread another hose end to the 1lb cylinder; Slowly open the hose valve to let propane flow in the 1lb cylinder; Listen for the transfer to stop; Turn off the hose valve and remove the 1lb cylinder from the hose; Weigh the 1lb tank to ensure 80% of its capacity is fulfilled; 1-year Quality Support: Alloxity is committed to providing superior product quality customer experience. Pls feel free to contact us if you need more information of the product and refill instructions. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!