FOR HAND-HELD CIRCULAR SAWS Optiline Wood Circular Saw Blade delivers precise quality cuts in all types of wood. High-quality precision-ground carbide teeth enable clean cuts. Base blade made of dimensionally stable SK5 hardened steel (> 40 HRC) ensures accuracy. Bore works with or without reduction rings to fit different sizes. Expansion slots lower vibration during use, which dampens noise and reduces heat development.