GR-T 180/30.0mm - "Premium Line"
GR-T 230/22,2mm "Premium Line Top-Silent"
GRF-T 230mm/M14 Premium Top Silent verzahnt
GR-T 300/30.0mm - "Premium Line Top-Silent"
GR-T 350/25.4mm - "Premium Line Top-Silent"
GR-T 450/30.0mm - "Premium Line Top-Silent"
GR-T 500/30.0mm - "Premium Line Top-Silent"