ITEM NAME:Watch repair tool balance cock holding support tool watch bridge bracket BX Feature: Balance Bridge Support Bracket For users to position the balance bridge with his balance -spring easily to do any corrections, inspections or repairs job. Base diameter: appr. Â 34.6mm Total Height: appr. 38.6mm Color:As Picture Packaging includes: 1*Balance Bridge Support Bracket.Balance Bridge Support Bracket. For users to position the balance bridge with his balance -spring easily to do any corrections, inspections or repairs job. 1 Balance Bridge Support Bracket. Total Height: appr.