with Accessory Area Cassette holds 8 instruments with an accessory area. Exterior Dimensions 5.5" x 8" x 1.25" (140 mm x 203 mm x 32 mm) IMS® cassettes are made of long-lasting, low-maintenance stainless steel. Soft, colored silicone rails securely hold instruments throughout the processing cycle. Available in over 100 different sizes, configurations and color options, and can be specialized to meet your needs.