The Saradomin sword is a two-handed sword which can be gotten in the God Wars Dungeon - the sword is a possible drop from Commander Zilyana and her bodyguards in the Saradomin area. It requires 75 Attacks to wield.
As the level 75, it can attack two-handed melee weapon and it is comparable to the Zamorakian spear and to godswords, all of which are also two-handed and require 75 Attack. While the Zamorakian spear is a stab weapon, and godswords are slash weapons, the Saradomin sword is a crush weapon.
The Saradomin sword was faster but weaker in the beta though it had a speed of fast while the others had a speed of average.