With a diameter of 7 and 7.94 mm, the wall thicknesses range from 0.32 to 0.50 mm. Depth of groove from 0.10 to 0.20 mm. The number of grooves on the perimeter of 50 to 70 depends on the wall thickness. With a diameter of 9.52, the walls have a thickness of 0.40 to 0.65. Depth of groove from 0.12 to 0.25 mm. The number of grooves on the circumference from 55 to 70 depending on the wall thickness. With a diameter of 12, 12.70 mm, the wall thicknesses can range from 0.61 to 0.75 mm and groove depths of 0.25 mm. The number of grooves 70, and with a wall of 0.75 mm we have 75 grooves.