Hand columnar borrow devices * columnar borrow devices * Dual columnar borrow devices companies push American Wildco columnar borrow devices push columnar borrow devices can be used for beach and shallow water sediment sampling. Headed components, easy push operation. 3 Orange with closure devices, two polycarbonate sampling tube head, two PVC liner. Optional shallow sampling different putter lengths (1.5m, 3m, 4.5m). Sampling tube length 508mm, other lengths (914mm, 1219mm, 1524mm, 2438mm) can be ordered. It can also tether operate as gravity column sampler use. Optional different putter shallow sampling lengths (1.5m, 3m, 4.5m) sampling tube length 508mm, other lengths (914mm, 1219mm, 1524mm, 2438mm) can be ordered.