Fits all regular one head foggers/ mist makers. (fogger not included), it holds fogger at its optimum working position in water. Buoy size: 4"(outside dia.) x 1.9"(inside dia.) x 2.5"(h) 1 Head Fogger buoy for M001(M001A), MBL01, CH24 and MDC01(not fit ML021 or ML021LRC) We have mist maker floats for the 1, 3, 5, 6, 9, 12, and 12XL mist makers for sale. Most of our spare mist maker buoys will also fit other manufactures Ultrasonic Mist Makers. Note: If purchasing a mist maker, we include a float with the kit. You do not need to purchase another one here. Use this floating ring to hold the mist maker at the proper operating level in the water. Float Buoy size: 6"(outside dia.) x 3"(inside dia.) x 3"(h) Dimensions of our different sized Mist Maker Floats: 1 Disc: Diameter: 110mm Height: 60mm Opening: 45mm 3 Disc: Diameter: 160mm Height: 75mm Opening: 70mm 5 Disc: Diameter: 195mm Height: 80mm Opening: 90mm 6 Disc: Diameter: 153mm x 343mm Height: 60mm 9 Disc: Diameter: 254mm Height: 85mm Opening: 125mm 12 Disc: Diameter: 280mm Height: 80mm Opening: 155mm 12XL: WxL: 230mm x 305mm Height: 95mm Opening: 133 x 203mm