 
	 
	
	
	
 Acc. to DIN 3113 Form B, ISO 3318, ISO 7738 
 Ring 10° offset from shaft, extra strong rings but thin wall 
 Sizes 5 and 5.5 with hexagon ring, up from size 6 with UD profile 
 GEDORE vanadium steel 31CrV3, chrome-plated, polished rings 
 * not standardised