Ketchum Individual Digit Number or Letter 201 Please Specify Group_Express 5 HS floater or drain plug de icer Can floater or drain plug de icer Can be converted from a floating to a sinking de icer by simply removing the cover and the float and turning the de icer upside down to rest on the bottom of the tank Sturdy feet support the unit off the tank bottom when operating as a sinking de icer Durable aluminum base Keeps entire tank ice free without overheating the water Multiple thermostat control Large non silicone coated tubes used for laboratory procedures requiring plasma or whole blood com with what letter or numbers you would like Digits for all of the Ketchum Model 201 Ear Tattooers