Check the listing for details. Dental Holder Assy, Standard For Handpieces, A/W syringes, Saliva Ejectors. Condition: New. Listed at 12.90 USD. Dental Mount Holders to be used For: *HVE, *Saliva Ejector*Air Water SyringeHVE Valve Mount Holder (7/8" Dia. Open) SE Valve Mount Holder (5/8" Dia. Open) Also for Extended HVE Valve A/W Syringe Mount Holder (5/8" Dia. Open) Each Valve comes with Screw: Normal 0 false false false EN-US X-NONE X-NONE Most dental units, dental carts, and assistant’s stations today employ accessory holders. These holders are an integral part of dental work and invaluable in providing proper dental care. The holders available today are varied, and come in many different configurations to fit your needs. 5/8" or 7/8". Typically, most holders will break down into two sizes which are identifiable by the size of their openings. There is the 5/8" opening, which is the most common, and will provide support for saliva ejectors, handpieces, syringes, and high volume evacuators which are held by the tip of the valve. The second style employs a 7/8" opening, and is typically only used to secure high volume evacuation valves which are held by the tubing connector, or base of the valve.