200pcs M3 Ultrasonic brass inserts Ak knurling insert M3*4.5*3.5

200pcs M3 Ultrasonic brass inserts Ak knurling insert M3*4.5*3.5 

Part Numbering System

ID(Inner diameter:d) * OD(Outer diameter:D)*Length

Product series

Material:Brass

Features

Ultrasonic Type