A chrome plated zinc alloy chestpiece with ``Simplex`` binaural, 1 piece molded PVC tubing and metal retaining ring.

A ``Duracote`` solid color zinc alloy chestpiece with ``Simplex`` binaural, 1 piece molded PVC tubing and color coordinated plastic retaining ring. Available in different colors and finishes.

A chrome plated zinc alloy chestpiece with ``Simplex`` binaural, 1 piece molded PVC tubing and metal retaining ring.

A ``Duracote`` solid color zinc alloy chestpiece with ``Simplex`` binaural, 1 piece molded PVC tubing and color coordinated plastic retaining ring. Available in different colors and finishes.

A chrome plated zinc alloy chestpiece with ``Simplex`` binaural, 1 piece molded PVC tubing and color coordinated plastic retaining and non chill rings.

A chrome plated zinc alloy chestpiece with ``Simplex`` binaural, 1 piece molded PVC tubing and color coordinated plastic retaining and non chill rings.

A chrome plated chestpiece with color combination tubings, plastic connector, binaural spring holders and plastic retaining ring.

A chrome plated chestpiece with color combination tubings, plastic connector, binaural spring holders and plastic retaining ring.

Redefined version with added features like, patented straight chestpiece`s twin stem tubing connector for an optimum acoustical perception, uniquely design twister thread bells with key to facilitate