3M Littmann Classic III Steth Gray 27 (Each) Non Slip Products Adjustable height feature allows therapist 8975 Adjustable height feature allows therapist to place lumbar spine into neutral or flexed position for increased patient comfort * Adjustable height from 33 51 cm (13 20 ) * * Molded rotary knob for comfortable resistance adjustments and quick stop operation Two sided chestpiece with tunable diaphragms on both the adult and pediatric sides * Single piece tunable diaphragm is easy to attach and easier to clean because its surface is smooth without crevices * Pediatric side converts to a traditional open bell by replacing the single piece diaphragm with a non chill rim * Next generation tubing provides longer life due to improved resistance to skin oils and alcohol less likely to pick up stains