HFi Blade flanges QERS-60 Standard blade flange for Pentruder HFi Wall saws. Sold complete with inner and outer flange, and screws. QEFRS-108 Flush cutting flange Ø 108 for Pentruder HFi Wall saws. Sold complete with flange and screws. QEFRS-110 Flush cutting flange Ø 110 for Pentruder HFi Wall saws. Sold complete with flange and screws. QEFRS-130 Flush cutting flange Ø 130 for Pentruder HFi Wall saws. Sold complete with flange and screws.