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Helsinki from Gram Discs

Production

Manufacturer / Distributor: Gram Discs
Approved Date: Jun 30, 2025
Certification Number: 25-104

Specifications

Max Weight: 179.3gr
Diameter: 21.6cm
Height: 1.8cm
Rim Depth: 1.5cm
Rim Thickness: 1.3cm
Inside Rim Diameter: 19.0cm
Rim Depth / Diameter Ratio: 6.9%
Rim Configuration: 51.75
Flexibility: 7.27kg