1.Material:PVC,with spring inside 2.Usage:Peel wire coat,insert the wire in,then tighten. Item No.H(mm)W(mm)Inside Dia.Wire RangeColorD(mm)WS-P1158.656.722-14GrayWS-P217.510.17.422-14BlueWS-P322.112.69.922-14OrangeWS-P424.513.71122-10YellowWS-P626.5161322-8Red Screw On Connector