Product description: trime access tube works with trime-pico-iph tdr soil moisture profile probe. Specifications no. Name model length description 1 trime transparent access tube qt-303008 1m pc tube with steel hoop 44*42mm a rubber stopper a cap a rubber ring. 2 trime transparent access tube qt-303009 1.5m pc tube with steel hoop 44*42mm a rubber stopper a cap a rubber ring. 3 trime transparent access tube qt-303010 2m pc tube with steel hoop 44*42mm a rubber stopper a cap a rubber ring. 4 trime transparent access tube qt-303012 3m pc tube with steel hoop 44*42mm a rubber stopper a cap a rubber ring. Origin: china