as stated in the manufacturer's documentation

inner diameter d1 = 7 mm

Official and downloadable files are available from the manufacturer

stained glass

svarende til 4/0 AWG

Snørresko Racer TR Roller S3 Str. 38, m/BOA lukning Unit(s):Pair as stated in the manufacturer'sProduct Overview This low cut safety shoe from SIEVI, the Sievi Racer TR Roller S3, is named as a sporty low cut safety shoe and is available in size groups 3438 and 3948. The product codes provided are 44 52343 332 93M and 44 52343 333 93M; the manufacturer's part number in the input is 44 52343 332 93M 38. The shoe is stated to comply with EN ISO 20345: 2011 S3 HRO SRC. Functional Features Aluminium toe cap. Steel midsole for nail penetration