Designed for quick determination of the proper diameter channel for buffer tubes ranging from 1.9 mm to 3 mm.

Features
• 5 convenient built-in sizing channels quickly determine the proper diameter channel for buffer tubes ranging from 1.9 mm to 3 mm

• Locking mechanism ensures the tool will remain closed during operation

• Safe, compact & ergonomic design fits comfortably in hand for easy operation

• Rugged polymer construction is lightweight & durable