The RIDGID R8648 SubCompact Brushless Cordless One-Handed Reciprocating Saw Kit with 2.0 Ah Battery and Charger delivers best in class cutting performance when tested against the leading competitors, with 0-3,200/min (SPM) and a 7/8 in. stroke length. Designed for one-handed use and often used in compact or overhead spaces, this SubCompact Brushless Cordless One-Handed Reciprocating Saw is 40% lighter weight and 25% more compact when compared to the R8647 Brushless Reciprocating Saw for a lightweight design and heavyweight performance