Options: 27 mm. 2, 3
Step of 1 mm. on the bottom
model 2: oval tip 2.40 / 3.20 x 4.80 round base at 27 mm.
model 3: oval tip 2.60 / 3.20 x 4.90 round base at 27 mm.
Options: 27 mm. 2, 3
Step of 1 mm. on the bottom