Welch Allyn Wall Aneroid CHILD Inflation System (5082-21). 767 Series Replacement Inflation Sytem that includes Welch Allyn Blood Pressure Cuff; Child, Reusable (Two Piece), 2-Tubes (5.5 and 14in/14.0 and 36.0cm), Small Inflation Bulb and Premium Valve, Tri-Purpose (#5082-168) Connectors; Cuff Range 20-29cm. Price per unit.