Runestaff of Construct Control

Price (item level): 13,500 gp (13th)
Body Slot: - (held)
Caster Level: 13th
Aura: Strong; (DC 21) transmutation
Activation: As spell used
Weight: 3 lb.

This staff looks nearly identical to a pipe wrench.

A runestaff of construct control allows you to cast any of the following spells (described here) by expending a prepared arcane spell or arcane spell slot of the same level or higher.

3/day:
Hide from Constructs (level 1)
Probe Command (level 2)
Scan Construct (level 3)

1/day:
Suppress Command (level 3)
Replace Command (level 4)
Command Construct (level 6)