The Bostitch 650S4 stapler features an AntiJam™ magazine, overmolded rubber grip maximizes comfort and minimizes fatigue; adjustable exhaust conveniently directs air away from user; adjustable depth guide sets staples to desired depths; increased power to countersink staples into dense hardwoods; long narrow nose for improved line of sight and for sSheathing applications requiring up to 2 inch leg staples.