1.Female dimension:51mmx43mm 2.Common Usage: Pigs, cows, breeder herds, etc. 3.Frequence:134.2KHZ 4.Material:special plastic Type: ETAG-PT01male dimension: 46mm×30mm×4mm Female dimension: 51mmx43mmCommon Usage: Pigs, cows, breeder herds, etc.Standard usage: Attached to ear with ear tag pin livestock ear tag