This bottle filler wand is simple, yet very effective for filling bottles fast!. 13 inces in length and no springs to wear out. Just start your siphon and place the wand in a bottle when you push it to the bottom of the bottle the nipple slids up and the flow starts filling the bottle. When the bottle is full to the top just lift and the flow stops! The volume the wand takes up in the bottle is identical in each one and is the perfect fill amount. Works great with our #4879 LARGE Auto Siphon. Makes any bottle filling job easy. 7/16 ID hose is required or use a #4885 drum tap.