The TreeWorks Tre24 Studio Chimes are suitable for live performance where your sound requires greater strength and resonance. The chimes are crafted from T-6 tempered, custom aluminum/titanium alloy bars (.375" diameter). The 4" professional triangle is hand-bent high-carbon steel with a satin chrome finish (beater included). The finger cymbal is sand-cast bronze. The chime is a scaled-down version of the popular Tre35.