The Product Is A Sturdy 1 Lb Propane Tank Refill Adapter That Can Be Used For Product Details 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. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.