internal diameter x width x thickness (mm)

6 × 1.5 × 1.5 mm

6 × 1.5 × 2.1 mm

6 × 1 × 1.8 mm

7.8 × 2.1 × 3.9 mm

8 × 3 × 2 mm

9 × 1.5 × 1.5 mm

9 × 2.1 × 1.9 mm

9.7 × 3.5 × 2 mm

10 x 3 x 1.6 mm

10 × 2 × 2 mm

10 × 1.5 × 1.5 mm

11 × 2.6 × 2 mm

11.5 x 2.5 x 2.8 mm

12 × 1.5 × 1.5 mm

12 × 2 × 2 mm

12 × 2.5 × 2.8 mm

13 × 2 × 2 mm

13 × 2.5 × 2.5 mm

13 x 3 x 4 mm

13 × 3.1 × 3.3 mm

13 × 2.8 × 4 mm

13 × 2.1 × 1.7 mm

14 × 2 × 2 mm

14 × 2.4 × 2.4 mm

14 × 1.5 × 3 mm

14 × 2.2 × 2.6 mm

14 x 2.5 x 5 mm

14 × 3 × 4 mm

15 × 2 × 2 mm

16 × 3 × 1.8 mm

16 × 2.8 × 2.5 mm

16 × 2.6 × 2.3 mm

17 × 2 × 1.5 mm

17 × 1.5 × 2 mm

17 × 3 × 2 mm

17.5 × 1 × 1.5 mm

17.5 × 2.2 × 3.8 mm

18 × 3.2 × 2 mm

18 × 2.6 × 2 mm

18 × 3 × 2.5 mm

19 x 1.8 x 4 mm

19 x 2.2 x 2.2 mm

19 x 2.8 x 2 mm

19 x 3 x 2 mm

19 x 3.3 x 3 mm

19.5 x 2.8 x 2 mm

20 x 2.5 x 2.5 mm

20 x 2.3 x 2.4 mm

20 x 3 x 3 mm

20 x 3.2 x 3 mm

20 x 3.2 x 4 mm

20.6 x 2.1 x 2.1 mm

21 x 2.1 x 2.1 mm

22.3 x 3.1 x 4 mm

23 x 3 x 2.2 mm

23 x 3.1 x 2.3 mm

23 x 3.5 x 3 mm

23 x 3.9 x 3 mm

23.5 x 2 x 2.3 mm

23.5 x 2.6 x 2.6 mm

25 x 3.3 x 3 mm

larger size available, please ask!