Material: Mild Steel - CR4 - BS1449 | Plating: Zinc. 14mm, 14mm - DIN443 (Industry Standard), 14.3mm, 14.5mm & 15mm. The assorted box containsSIX each of the following 8mm, 8.5mm, 8.75mm, 9mm, 9.5mm, 10mm, 11mm, 12mm, 12.5mm 13.5mm.
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