Polished stainless steel trays with a laser-welded handle are sterilizable by any method. Retention rim holds impression material - no adhesive necessary. Includes: (1) Benco Dental™ Stainless Steel Perforated Extra Large Upper U-1 Impression Tray (1) Benco Dental™ Stainless Steel Perforated Large Upper U-2 Impression Tray (1) Benco Dental™ Stainless Steel Perforated Medium Upper U-3 Impression Tray (1) Benco Dental™ Stainless Steel Perforated Small Upper U-4 Impression Tray (1) Benco Dental™ Stainless Steel Perforated Extra Small Upper U-5 Impression Tray (1) Benco Dental™ Stainless Steel Perforated Extra Large Lower L-1 Impression Tray (1) Benco Dental™ Stainless Steel Perforated Large Lower L-2 Impression Tray (1) Benco Dental™ Stainless Steel Perforated Medium Lower L-3 Impression Tray (1) Benco Dental™ Stainless Steel Perforated Small Lower L-4 Impression Tray (1) Benco Dental™ Stainless Steel Perforated Extra Small L-5 Impression Tray