Starrett BT121014-5 Bi-Metal Reciprocating Blade, Tapered 300mm 10-14 TPI (Pack 5)Starrett 3X POWER Bi Metal reciprocating blade technology provides up to three times the life and increased cutting rates compared to our previous line, setting a new level for performance and value on the market. The multi purpose range features a tapered blade for straight cutting in those hard to reach places. Suitable for general cutting over a wide range of materials, the blades new tooth profile provides smoother, increased performance cuts.