This product is either discontinued or we cannot get that from suppliers.
Poly 86540-01, Accessory Kit, 3 pairs of ear tips (small, medium, large), 2 ear loops, 2 earbuds, 3 ear loops, Headset, Compatible With Poly CS 540, 540A.
Replace missing earpieces with this headset kit. The spare accessories include three ear loops, four ear tips, and one foam sleeve to accommodate all size and comfort levels.