TCT Tooth Timber BladesEngineered for extreme performance, giving up to 6x the life of a standard saw blade. Size: 235mm / 9 & 1/4" Teeth: 20T ATAF: 15 degrees Rake: 18 degrees Bore: 25mm Kerf: 1.8mm RPM: 6,500 Designed to cut: wood, wood with knots and nails, hardwood, softwood, plywood, MDF and chipboard Suits: general purpose, rip/crosscut, for use with circular saws Premium European hi-density carbide for extreme durability and cutting life Heavy duty laser cut plate is constructed of the finest quality steel, making our blades tough and resilient Laser cut vents provide superior noise and vibration absorption Impact resistant brazing for high-performance tooth bonding Thin kerf design increases battery life on cordless saws and makes cutting fast and effortless Pro Shield blade coating means less gumming and pitch buildup, coating is also corrosion resistant for long blade life Anti-friction layer for smoother cutting Precision tooth grind for superior tracking and cut quality Anti-kickback design features reinforced shoulder for safety and durability Handles wood with nails and knots