Consolidate Your Backpacking Fuel With The Flipfuel® Fuel Transfer Device. This Ultra-lightweight Durable Gadget Allows You To Transfer Isobutane Fuel Between Canisters And Top-off Your Fuel Before A Trip. The Precision-engineered Aluminum Alloy With Brass Fittings And A Trail Weight Of Just 1.4 Ounces (39.7 Grams) Make It A Backpacker''s Essential. Get Peace Of Mind With Our Replacement Guarantee And End Fuel Anxiety On The Trail.