Omega® Crown (Hermetic), steel, thin, slightly domed, diameter 4.50 mm, see all case numbers in description Omega® 30 T 1 This 8" length is the

This 8" length is the length of the cutting portion of the file

to fit Jacques Edho®

The chain end allows the jeweller to have an ending on which a jump ring and or clasp can be attached

Rolex 1600

Omega® Crown (Hermetic), steel, thin, slightly domed, diameter 4.50 mm, see all case numbers in description Omega® 30 T 1 This 8" length is theOmega Crown (Hermetic), steel, thin, slightly domed, diameter 4. 50 mm, see all case numbers in description Omega Steel Hermetic Crown, thin, slightly domed, diameter 4. 50 mm, fits tube 2. 00 mm, total height of crown 2. 30 mm, medium pipe, tap 0. 90 mm. Fits Omega case numbers: 2398, 2402, 2403, 2412, 2413, 2416, 2445, 2446, 2481, 2482, 2516, 2648, 2658, 2663, 2827, 2841, 2862, 2862 65, 2865, 2888, 2897, 2898, 2979, 2982, 14702, 14703, 14724, 14748,