This hand-held needle detectors, is the principle of magnetic fields, can effectively detect the broken needle etc tiny iron items.

Feature: 

• Power: 9V fold battery
• Detecting Sensitivity : Minimum detecting Fe 0.8MM; Diameter Fe 1.2mm can reach 10mm height; Diameter 0.7*20 broken needle can reach 50mm height
• Weight: 232g
• Size: 150(L) -70(W)*35(H)mm