Features 1、COMFORTABLE TO USE: High temperature quenching heat treatment strengthens the overall hardness, more comfortable for you to use 2、NO BURRS: Adopt one piece molding without burrs, which bring smooth surface and fluent installation 3、REDUCE RESISTANCE WHEN OPENING: The cut out design is larger, which reduces the resistance when opening the hole, bring high efficiency 4、METICULOUS WORKMANSHIP: Involute gear cutters have smooth edges with meticulous workmanship, not easy to scratch your hand, safe and reliable 5、FINE PUNCHING: Disc milling cutter is made with fine punching, bring smooth cutting, which possess small error Specification Item Type: Involute Gear Cutters Material: High speed steel Specification: 125x10 Diameter: Approx. 125mm / 4.92in Tooth Width: Approx. 10mm / 0.39in Inner Diameter: Approx. 32mm / 1.26in Number of Teeth: 20 Package List 1 x Involute Gear Cutter