17 DIAMOND BLADES UNIVERSALCONCRETE bushes & re-boring remember! - All DURO blades can be either bushed to reduce the bore or bored out to increase the bore size to suit your requirements. bore sizes of 15.00 (cup grinders only), 16.00, 20.00, 22.25, 25.4 & 30.00mm can be achieved. Charges apply. important - The HSE* strongly recommends the use of dust suppression tanks when using diamond blades. Exposure to RCS dust created when using diamond blades can lead to serious health problems. See the full range on pages 30-32 dust suppression DU/C universalconcrete 12MM SEGMENT HEIGHT SEGMENTED kEY HOLE GULLETS DESCRIPTION ; A cutting blade with key hole gullet design for less chipping and reduced vibration. Good speed of cut and life. USE ME FOR ; Hard bricks / Lightly reinforced concrete / Concrete kerbs, beams, lintels & flags / facing bricks / General purpose