A dispensing apparatus includes a single-piece body, first channel, second channel, guidewire, and outlet. The single-piece body has an open end and a closed end. The first channel and second channel are within the body. The first and second channels share a sidewall and the first channel is defined by the open end. The first channel and the second channel are fully enclosed and do not include clips. The guidewire is disposed within the first and second channels. A cross sectional shape of the first and second channels includes a flat portion defining the sidewall shared between the first and second channels, a seat for the guidewire to slide upon, a first ramp, and a second ramp. The first ramp and the second ramp are configured to direct the guidewire toward the seat. The outlet port is disposed directly at the open end and has a cross sectional shape transitioning directly from the cross sectional shape of the first channel to a circular cross sectional shape of the outlet port.
