This is brass flat CZ121 grade, high quality mill finish i.e. not polished. 
Various sizes and lengths available from drop down box below.
All 12 inch lengths sent via Royal Mail, anything longer sent via myHermes, or DHL parcels UK. sent on pieces of wood to prevent damage in transit.

sizes available are:

1/8 (3.17mm) x 1/4 (6.35mm)
1/8 (3.17mm) x 3/8 (9.52mm)
1/8 (3.17mm) x 1/2 (12.7mm)
1/8 (3.17mm) x 3/4 (19.05mm)
1/8 (3.17mm) x 1 (25.4mm)
1/8 (3.17mm) x 1 1/4 (31.75mm)
1/8 (3.17mm) x 1 1/2 (38.1mm)
1/8 (3.17mm) x 2 (50.8mm)

3/16 (4.76mm) x 1/2 (12.7mm)
3/16 (4.76mm) x 3/4 (19.05mm)
3/16 (4.76mm) x 1 (25.4mm)
3/16 (4.76mm) x 1 1/2 (38.1mm)
3/16 (4.76mm) x 2 (50.8mm)

1/4 (6.35mm) x 1/2 (12.7mm)
1/4 (6.35mm) x 3/4 (19.05mm)
1/4 (6.35mm) x 1 (25.4mm)
1/4 (6.35mm) x 1 1/4 (31.75mm)
1/4 (6.35mm) x 1 1/2 (38.1mm)
1/4 (6.35mm) x 2 (50.8mm)

5/16 (7.94mm) x 3/4 (19.05mm)
5/16 (7.94mm) x 1 (25.4mm)

and more, if you need a size not listed please get in touch.