3M Steri Strip Skin Closure Strips, Non Woven, 1 2 inch X 4 inch, Reinforced Strip, White, 1 Case of 200 Wax Baths Refill Wax Closed patella Cups are 7 Closed patella Spacious stainless steel interior accomodates splinting sheets up to 24 x 18 working tank with a cover * Features dual thermostatic controls on high (175oF) and low (160oF) that can be adjusted individually * Dual independent heating elements for both settings provide quick warm up and automatically convert to a more effecient circuit once the working temperature is reached * Grounded hospital grade plug and high heat safety switch * these 3M™ Steri Strip™ reinforced skin closure strips are safe for sensitive skin These 1 2 inch x 4 inch Steri Strip™ adhesive skin closures contain polymer filaments for a secure closure