Friend Interdental Brush L-shaped Type 3S (SSS) Size, 28 pieces This is a bag of 30, but it contains 28 unused, new pieces. Two 18g sample tubes of medicinal toothpaste Sensodyne Platinum Protect EX (unused) are included as a bonus. Interdental brush size: 3S (SSS) Simple round handle with rubber non-slip grip Uncoated Each brush has a cap Total length 91 mm The long body and rubber grip make it easy to use. The wire is strong and thin, so it can easily fit into narrow interdental spaces.