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Characteristics:
Of 6 leaves of sisal and 6 leaves of cotton.
Diameter of the hole of 60 to 230 mm
Outer Diameter, of 160 to 700 mm
Sewn concentric a: 5 mm, 7'5 mm, 10 mm, 15 mm
Fabric
of sisal anf cotton, bias-cut in alternate, gathered layers, with
concèntric stitching of 5, 7.5, 10, 15 mm. The cotton gives
a polished finish.
The disc is composed of six layers of sisal and six of cotton.
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