Makita 324219-0 - Depth Gauge 

Features:

• For drilling holes to a specific depth
• Installs quickly and easily
• High quality materials for long life
• For use with select Makita Hammer Drills and Rotary Hammers

Compatible Tools:

• Makita HR2663 - 240V 800W 26mm SDS Plus Rotary Hammer
• HR2440
• HR2450
• HR2440F
• HR2450F
• HR2020
• HP2051
• HP2051F
• HP2230X