Acc. to DIN 838, ISO 3318, ISO 1085, ISO 10104 Ring: thin-walled, 5? deep offset from shaft, with UD profile for gentle transmission of force Specialist for extremely deep or inset bolts ... <a href="/products/gedore-2-46x50-double-ended-ring-spanner-offset-46-mm-x-50-mm#shortDescriptionLink">Read more</a>