A sai is a metal spike flanked by a pair of prongs used to trap an enemy’s weapon. Though pointed, a sai is not usually used for stabbing. Instead, it is used primarily to bludgeon foes, punching with the hilt, or else to catch and disarm weapons between its tines. Sais are often wielded in pairs.
A sai’s prong-like extrusions are designed to help catch and disarm opponents’ weapons. With a sai, you get a +4 bonus on opposed attack rolls made to disarm an enemy (including the roll to avoid being disarmed if such an attempt fails).
The sai is a special monk weapon. This designation gives a monk wielding a sai special options.
| Range | Damage | ||||||
|---|---|---|---|---|---|---|---|
| Weight | Cost | Damage | Critical | Increment | Type | Special | |
| Sai | 1 lb. | 1 gp | 1d4 | ×2 | 10 ft. | Bludgeoning | Disarm, Monk |
Source: Player’s Handbook (Page 120), Pathfinder Ultimate Equipment (Page 35), Oriental Adventures (Page 74), Arms and Equipment Guide (Page 9)