T-Bands S/S Straight Assorted 100/bx. Self-contained matrix bands that do not require matrix retainers “T”- Bands are made of soft, adaptable brass or stainless steel matrix material (.002”/.05mm thick) and are available straight, curved, narrow (5/32”/ 4mm), wide (1/4”/ 6.4mm) and in assortments. “T”- Bands will not break or tear when condensing amalgam and are especially popular for use in pediatric dentistry.