Harcostar Long Linking Kit The Harcostar 1.5m (approx) Long Linking Kit is designed to connect two water butts together, allowing water to flow between them and increasing your overall rainwater storage capacity. Supplied with a long flexible linking hose, angled connectors, nuts and washers, the kit provides a practical and secure way to link water butts positioned further apart than a standard linking kit allows. Ideal for gardeners looking to make better use of collected rainwater, the kit is simple to install and offers a convenient solution for expanding an existing water butt setup.