Simply select the correct flange pin from the kit. 
Insert it and rotate with wrench.  Requires 2 pins.  Kits offer 2 of each size.  See size chart and  specs below
TITAN Flange Aligning Tool Sets 
CATALOG NO. SET INCLUDES 2 EACH: WEIGHT 
FTS24 
 FT02, FT03, FT04
FT02, FT03, FT04 
 8 lbs.
8 lbs. 
 FTS26 
 FT02, FT03, FT04, FT06     11 lbs.
FT02, FT03, FT04, FT06     11 lbs. 
 FTS28  FT02, FT03, FT04, FT06, FT08   15 lbs.
FT02, FT03, FT04, FT06, FT08   15 lbs. 
 FTS212 FT02 FT03 FT04 FT06 FT08,FT1012 21 lbs 
Manufacturer and supplier of pipe tools to worldwide industry. 
Copyright 2006, American Maintenance Systems, all rights reserved
American Maintenance Systems 
12407 N. Mopac Expwy
Suite 250-469
Austin, Texas 78758
  
phone 512 238 0962
fax 512 238 0961
Flange alignment tools are required to straighten misaligned flanges.  This unique tool is simple, safe and fast.