0528A Watch Mainspring 1.30 X 0.10 X 305 (12") (Calibers in description) 18mm Silver Watch Bands This number 54 barrel fits

This number 54 barrel fits Hermle movement FHS 350

You can choose between a steel blade or a diamond blade

7N42 20 Seiko Quartz Watch Movement is a 3 hand movement (hour/minute/sweep second) with date at the 3 o'clock position

small has diameter of 1-1/2"

Overall length is 7" (178mm)

0528A Watch Mainspring 1.30 X 0.10 X 305 (12") (Calibers in description) 18mm Silver Watch Bands This number 54 barrel fitsDimensions: 1. 30 X 0. 10 X 305 (12") End Type: Tongue End Material: Swiss Made unbreakable Calibers: AS 1525, 1526, 1696, 2082 Brac 2085 Bulova 7M, 10AK, 10AKsc, 10AKCSH, 10BH, 10BM, 10BMC, 10BMCD, 11OS Concord 241 F, 242 F, 248 F, 341 Cortebert 401 Damas 18, 18 12 c 18 SC Dugena 976 Durowe 450 Ebel 9C, 98 Elgin 746, 791, 826, 874 Enicar 1696 Eterna 600, 600 S Gruen F 10, 455R Junghans 50, 650 Movado 15 OLM, 150 75 Bas, 155, 157, 159, 205 Phenix 1801