Description: What this ring can offer you is that it can give you delicate operation. What this ring can offer you is that it can add resistance and prevent you from over-shooting your target. It is made of sponge, which is very soft. The length of the product is 7cm, the width is 5cm, and the height is 0.5cm. The red style is suitable for joy-con and the blue style is suitable for Switch Pro, for ps4, for Xbox. Item Name: Positioning Circle Material:Sponge Size:7cmx5cmx0.5cm/2.76inx1.97inx0.2in Notes: They are suitable for joy-con, for Switch Pro,for PS4,for Xbox. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 4 X Grey Positioning Circles 8 X Black Positioning Circles