Monoject 19 Gauge x 1.5" Aluminum Hub Needles : 100ct Species_Equine and 10 left mixing toes and 10 left mixing toes allows user to freeze colostrum •Configuration of the bottle provides for easy storage in a freezer compartment •High value storage cap provides for extended use or abuse with secure interface between cap and container •Feeder bottle is manufactured to be used in automatic washers as well as used in conventional feeding racks •Adaptable neck finish available for use with roll on nipples like Calf Maid® or other roll slip on nipples •Handle and body are easily cleaned internally using a long handled brush The aluminum stabilizing insert makes the needle more durable single use needles with a special bevel grind designed for use in animals