ADC® Tuning Fork with Fixed Weight, 1 Each Maternity Supports An excellent solution for all 14283 An excellent solution for all CPAP users ingenious yet simple * Prevents 'fighting' 'tug of war' and 'neck choking' of the CPAP tubing while sleeping * Helps to prevent CPAP mask leaks as you toss and turn * Top tubing and adjustable arm loop swivels and moves as you move allowing the user to move around at night without getting tangled in the CPAP hose * Elastic internal cord stretches as the user moves * Length is 40 * Base (5 wide x 8 long) slides between box spring and mattress installs in seconds no tools required For Sentra Wheelchairs * Aluminum alloy tuning forks designed and manufactured to meet the demanding needs of the medical profession Produced from 3 8" x 1" bar stock for superior performance and consistent frequency accuracy