Bosch Reciprocating Saw Blade RM618B 6 Inch 500 Piece Bulk Pack (18 TPI Bi Metal Sheet Metal Ferrous NonFerrous Pipe Profile Cutting Universal Shank) Equipment Retractable Rafter Hook: Built in folding Retractable Rafter Hook: Built in folding hang hook allows temporary storage on ladder rungs or 2x framing members to prevent drops 0 Ah batteries to handle prolonged workloads this heavy duty commercial blade supply solves the problem of high cost per cut ratios and field data bottlenecks by cleanly slicing through 10 to 16 gauge sheet metal along with structural profiles and pipes between 1 8 inch and 5 16 inch in thickness (500) Bosch RM618B 6 Inch 18 TPI Bi Metal Metal Cutting Reciprocating Saw Blades