Wholesale Cable Joint Clamp Copper split bolt made from high strength copper alloy allowing. Highly resistant to corrosion and split cracking. Maximum conductivity sturdy and high breakage resistance. Precision tooled threads allow maximum torque to be applied.It can be tighten down nicely making a secure connection of the joint. TypeLMHS T/J-1620M17*2.5618 T/J-2527M19*2.5720 T/J-3535M21*2.5722 T/J-50-7042M23*2.51124 T/J-90-12045M25*2.51426 T/J-150-18560M29*2.51730 T/J-200-24062.72M31*2.52032Wholesale Cable Joint Clamp website:http://www.gedele-terminal.com/cable-joint-clamp/