The Water Butt Overflow Kit Is An Essential Piece Of Equipment If You Are Planning To Direct Rain Water From Your Downpipe Straight Into Your Water Butt & Are Not Using A Rain Trap As It Will Allow Excess Water To Be Directed To A Suitable Drain Or Soak-away.water Butt Overflow Kit Is Only Required If A Raintrap Is Not Fitted 2.5cm Diameter Pipe 1.5 Metres Longthe Overall Connector Projects 6cm From The Waterbuttfits All Harcostar Water Butts 2.5cm Hole Can Be Drilled In All Makes Of Water Butt To Take Overflow Kitsimply Screw-fit Connectortough Plastic Fixings