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Product Name: Open Builds Lock Collar

Material: high quality metal material

2mm:   2 (ID) *   7 (OD) * 5 (Height)

3mm:   3 (ID) *   8 (OD) * 5 (Height)

4mm:   4 (ID) *   9 (OD) * 5 (Height)

5mm:   5 (ID) * 10 (OD) * 5 (Height)

6mm:   6 (ID) * 11 (OD) * 5 (Height)

7mm:   7 (ID) * 12 (OD) * 5 (Height)

8mm:   8 (ID) * 14 (OD) * 7 (Height)

10mm:10(ID) * 15 (OD) * 6 (Height)

12mm:12(ID) * 17 (OD) * 6(Height)

Package list:1PCS