3pc Dry Diamond Core Kit: Cores - 38mm, 52mm, 117mm + Accessories + FREE 115mm GCM Trade Diamond Blade|Abracs Dry Diamond Cores are manufactured using tool grade steel and premium diamond grain. Featuring a new fluted barrel and wide slots for easy and efficient removal of dust and debris. 150mm in length with a diamond turbo segment set firmly into the metal core to ensure maximum strength and durability. Excellent working life, speed and performance.|Debris Removal Slots|Stronger Bond|10mm Diamond Segments