Rod to cable clamp (type G) 1/2" 12.5 mm 16-50 mm? 0.05 kg

""Nominal rod diameter: 1/2" 12 mm
Max. conductor: 16-50 mm?
Weight each: 0.05 kg
High strength copper alloy clamp designed to provide a high quality, low resistance connection between solid circular or stranded conductor and an earth rod.""