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
