Comparison : Item # 2.0mm (6") NP, 2.0 Millimeter (mm) Material Thickness (B) and 1/2 Inch Loose Rings; Nickel Plated Finish Martingale Chain
Item # 2.0mm (8") CDW, 2.0 Millimeter (mm) Material Thickness (B) and 1/2 Loose Rings; CDW Martingale Chain
Item # 2.5mm (6") NP CDW, 2.5 Millimeter (mm) Material Thickness (B) and 3/4" Loose Rings; Nickel Plated Finish CDW Martingale Chain
Item # 3.0mm (6") NP CDW, 3.0 Millimeter (mm) Material Thickness (B) Nickel Plated Finish CDW Martingale Chain
Item # 3.0mm (6") NP (1-1/2"), 3.0 Millimeter (mm) Material Thickness (B) and 1-1/2 Inch (in) Loose Ring Size (C) Martingale Chain