Strength and durability
Plastic parts are designed to be impact and dent resistant. The metal jaws make the jaws more durable and firm for gripping.
Plastic is lighter weight for better functionality, and also saves costs on transportation and recycling.
The single usage saves time on resterilizing the instruments after use, and also helps avoid liability issues due to second hand contamination.
The colored instruments are less threatening to patients and users. A uniform and cost effective color branding helps your brand awareness.