Comparison : Item # 50030 2.3mm CP, 2.3 Millimeter (mm) Material Thickness (B) Training Collar Leg Link
Item # 50030 3.0mm CP, 3.0 Millimeter (mm) Material Thickness (B) Training Collar Leg Link
Item # 50030 3.2mm CP, 3.2 Millimeter (mm) Material Thickness (B) Training Collar Leg Link
Item # 50030 1.6mm CP, 1.6 Millimeter (mm) Material Thickness (B) Training Collar Leg Link