Winco Locking Caster Special Balance Disks Exercisers HIGH PROFILE 4 HIGH * 85180 HIGH PROFILE 4 HIGH * 16 x 18 * Customized fit through the simple push of a knob * The revolutionary ISOFLO© Memory ControlTM offers shape fitting capabilities while the user is seated allowing quick and easy on demand adjustment to maximize function * The QUADTRO SELECT Cushion allows for quick simple position selection for every user while seated * Stability is enhanced by locking the air into place in each of the four quadrants * Easy to handle and carry at just 3 5v halogen illumination and 10x optic system insure true tissue color for accurate identification * Removable contact plate is auto clavable * Large knurled focusing ring * Comfortable soft synthetic rubber eyepiece * Reticle contact plate etched onto the lens in mm permits easy measurement of suspicious lesions * Instrument head with Bayonet locking mount for secure connection to the battery handle * C cell powered battery handle with rheostatic on off switch * Satin chrome plated handle with knurled finish for a positive grip * Complete with nylon zippered pouch that holds the instrument and spare contact plate * Inspected and packaged in the U Heavy duty 5'' (13 cm casters) with positive locking swivel and wheel brake * Brake easily set & released by foot * Smooth rolling action regardless of weight in chair *