Comparison : Item # HCDC-2.50, Heavy Stud Crowned DCB Roller
Item # HCDC-2.50-H, Heavy Stud Crowned DCB Roller
Item # HCDC-2.50-R, Heavy Stud Crowned DCB Roller
Item # HCDC-2.50-R-H, Heavy Stud Crowned DCB Roller
Item # HCDC-2.75, Heavy Stud Crowned DCB Roller