Pennington forceps are an essential tool for any professional piercer.
Small model:

• 6" (15.25 cm) long.
• Head 0.39" (10 mm), inner diameter 0.24" (6 mm). 

Large model:

• 6" (15.25 cm) long.
• Head 0.51" (13 mm), inner diameter 0.28" (7 mm).

Both models come with a 3-step locking mechanism.