4 pole speakON cable connector, screw terminal assembly, chuck type strain relief for cable diameters 10 to 16 mmFeatures Up to 37 A rms current rating Unique Neutrik locking bushing and strain relief for cable diameters 10 mm to 16 mm IEC 61984, UL 1977 and CSA C22. 2 No. 182. 3 certified Superior NEUTRIK quality standard, extremely robust and reliable Easy to assemble because the strain relief locks with the insert mechanically and aligns with the housing Easy and reliable twist lock system Ergonomic design with slip proof two component molded housing Improved