Hi-Fi Speakers
Ground Zero GZIF 4.0 - 10 cm 2-Way Speaker with 100 Watt (RMS: 60 Watt)
100 mm 2 way coaxial speaker system with lightweight HQPP membrane; 2 way coaxial speaker system; HQPP membrane with 3D structure; rubber surround; low resonance steel basket; universal 4 ohm version; 13 mm Mylar tweeter; ferrite magnet; 6 dB/octave...
https://www.bizrate.co.uk/hifispeakers/ground-zero-gzif-4-0-10-oid30967933672.html