Medi Vac® Guardian™ Suction Canister, 2000 mL, 1 Case of 40 Cervical Collars 6 Deluxe 180 degree * Jobst Opaque Sensitive 6 Deluxe 180 degree * Measures the range of motion of metacarpal phalangeal and interphalangeal joints * Head has two opposing scales marked in 5o increments * Features a linear scale in both inches and centimeters on arm * Deluxe model features a larger protractor head and full 180o scale for more accurate readings * Shows temperatures ranging from 90 to 100° F Lid includes accessory and orthopedic ports 90° adapters allow tubing to connect at right angles to help prevent kinking and impeded fluid flow