Convenient, easy storage plunger locks down to reduce height for compact storage. Easy to use siphon pump is great for a variety of applications. Use it with soaps, lotions and chemical concentrates. Versatile pump fits multiple adaptors; fits 38/400, 89/400, 110/400, 120/400. Type: Dispensing; Style: Dispensing Pump; Operating Principle: Displacement; Volume @ Number of Strokes: 1 oz @ 1.