Wearing headphones often falls in; the ear hook is the best way to solve this problem. Not only the headset can be securely caught, also reduce the damage to the ear. Ear hook dia: 6mm Ear hook LXW: 50x20mm Ear cap LXW: 27x17mm 25x15mm 22x13mm Material: plastic&silica gel Color: transparent Suitable for: Plantronics 925 975 Easy to wear headphones, reducing hurt of headphones with long time.Ergonomic design, comfortable to wear; environmentally friendly materials, soft and flexible; effectively fit the shape of the pinna. silicone, environmental health, According to the original measure your headset earhook or headphones judgment if is appropriate. Package Contents: 9pcs ear caps 3pc ear hook Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.