Make filling your water tanks easier with one of these adapters. Just unscrew the water filler cap, screw in the Kwikfill, click on your hose and off you go. No more coughing, spluttering and water squirting back in your face. No more standing holding a hose for ages until the tanks are full. Ensure original breather hole is not blocked so air can escape and once the tanks are full water will escape via this breather. Fits all Alko and Hume type water fillers with a 1.75” x 4 TPI thread. Designed and manufactured in Australia. Machined from solid acetal, not 3D printed or injection moulded. Has not been tested beyond 25 litres per minute (measured at end of hose). Flow rates above this may possibly cause tank damage. 30-day money-back guarantee!We're very confident you will love this product but for added peace of mind we back this product with a 30-day money-back guarantee.Simply return the product to us and we will fully refund you, including shipping.Item must be undamaged and/or unchanged. Minor wear and tear accepted