DEWALT DC315K 28-Volt Lithium Ion Cordless Recipricating Saw with NANO Technology 1-1/8-inch stroke length and 0-3,000 spm for fast cutting 4-position keyless blade clamp allows quick blade change, flush cutting, and versatility Anti-slip comfort grip provides increased comfort and control 3-position adjustable shoe for adjusting depth of cut and extends blade life DEWALT exclusive lithium-ion cells offer long battery life and durability: 2,000 recharges DEWALT-built high torque, high efficiency motor with electric brake powers through the toughest applications