Tree Pruner Saw Blade Curved taper-ground blade reduces friction to cut quicker with less effort. Extra-sharp teeth cut on pull stroke. Mazimum strength teeth, each individually impulse hardened. Cutting surface length is 13". SK5 high-carbon steel. Bolt-on design fits these Corona tree pruners: TP 4214, TP 3714, TP 3712, TP 3841, TP 3811, TP 3702, TP 2212, TP 2712, TP 2612 and TP 2512. Blade Material: High Carbon Steel Blade Length: 14.75 in. Cutting Capacity: 8 in. Overall Length: 1.2 ft.