Use for obtaining samples from river, stream, or lake bottoms. Works best in soft, silty, vegetation-free bottoms. Unique of sample chamber lid and jaw assembly release mechanism offers not only positive action when activated, but also helps to reduce instability and frontal shock wave effects when lowered rapidly. 6″ x 6″ x 6″ deep sample diameter. 316 stainless steel dredge construction, plus stainless steel springs and cables. Enclosed rip release mechanism. Use 11 oz. . 10 lbs. Kit includes: grab, case, line and . Extension handle replaces messenger in shallow water.