KARCHER Starter Universal Micro Irrigation Rain BoxKARCHER Starter Universal Micro Irrigation Box order no. 2. 645 238. 0 The Krcher Rain Box is the ideal starter kit for efficient, economical and needs based garden watering. The Krcher Rain Box contains a G1 tap connector with G3 4 reduction piece for connection to a tap, 2 couplings, 1 filter, 15 m Krcher Rain System hose (consisting of input hose and for attachment of collars), 10 m soaker hose, 4 T connectors with regulation, 4 I connectors, 10