4/8/12/20Pcs Toothbrushes Head Compatible for 1100/2100/4100(Black-8 Pcs)

- Replacement toothbrush heads available in 4, 8, 12 and 20-piece packs, compatible with 1100, 2100 and 4100 electric toothbrushes - Multiple pack options meet different daily replacement needs and save the trouble of frequent purchases - Precise structural fit ensures secure attachment to the handle, preventing loosening during daily use - Sturdy build retains shape and functionality well after repeated applications - Compact and lightweight design enables easy storage and convenient carrying for home use and travel