Thin S” leaves a fine line with less ink transferred to the corneal stroma. Optimal angle between tip and handle provides for better visualization of “S” while marking.
https://cdn.shopify.com/s/files/1/0512/1710/5045/files/RUMEX_Toric_A4_EN_0604_OUT.pdf?v=1612359956,https://cdn.shopify.com/s/files/1/0512/1710/5045/files/RUMEX_Toric_EN.jpg?v=1612360271