Product description: QT-DN01 is suitable for most types of bottom sediment sampling. The samples can be used to study sediment profile composition. The sampler is made of stainless steel with carbon steel coating for rust resistance. It is easy to use at a dock or on a boat. The sampling area is 15 cm * 15.5 cm. Features: • SUS304 stainless steel • With four counterweights and the counterweights can be adjusted according to the sampling site conditions • Standard10mm* 10 m pulling rope is included, other specifications of rope can be customized. • With Aluminum case, easy to carry Technical Specifications: NO Name Specifications 1 Body size (open) 155mm L * 420mm W * 350mm H 2 Volume 3.5L (standard), 5L (optional) 3 Opening size 150mm*155mm 4 Grab bucket Material SUS304 stainless steel 5 Pulling rope 10mm*10m 6 Spring latch SUS304 stainless steel 7 Case size 485mm*230mm*400mm 8 Counterweights ( optional ) SUS304 stainless steel, diameter 70mm, height 30mm, 4 counterweights Origin: CHINA Website: www.channeleco.com/en/Item/Show.asp?m=1&d=1284