This is popular and universal shape called Rounded Bud.
These bits are of two variants
Fine (red) are recommended for working with sensitive cuticles, polishing the cuticle zone after removing the cuticle and nail’s wall.
Medium (blue) is usually used for removing cuticles from nail plates, cleaning the nail’s wall and plates.
Upon completion of the work with a client, all bits that were used to perform the procedure must be washed, cleaned, sterilized and dried. A solution of at least 70% alcohol is recommended for effective disinfection.
Speed recommendation: up to 20000 RPM.
Shank diameter: 3/32”
Shape: Rounded Bud