The turned wooden body is essentially tubular in shape and widens considerably towards the lower end. It is open at the bottom and has a glued-on reptile leather top. The wooden string carrier ("spike") is inserted diametrically through the upper third of the body and secured by an attached ivory frog, which also serves as a tailpiece. The tailpiece is curved backwards at its end and has an octagonal or square cross-section. There are holes for two (rear?) pegs, the pegs are missing. Remains of two twisted gut strings are present. Explanatory notes on the instrument: also spit violin; einh. Name: nhị (North Vietnam, formerly Tonking) cō (South Vietnam, formerly Cochinchina), bow and violin are never separated.