DEWALT DW310K 12 Amp Heavy-Duty Reciprocating Saw Kit 12 Amp motor delivers increased power for heavy-duty applications 0-2,700 SPM and 1-1/8-inch stroke length for fast and efficient cutting Keyless stainless steel blade clamp for quick and easy blade changes and increased reliability Keyless adjustable shoe easily adjusts depth of cut and extends blade life Variable speed trigger allows user to instantly control speed