Brass Insert NOS 100 Brass insert 4x6 Heigth 15 mm Inner and outer Threading in MM Brass Insert NOS 100 Brass insert 6x8 Heigth 15 mm Inner and outer Threading in MM Brass Insert NOS 100 Brass insert 8x10 Heigth 15 mm Inner and outer Threading in MM Brass Insert NOS 100 Brass insert 8x12 Heigth 15 mm Inner and outer Threading in MM Brass Insert NOS 100 Brass insert 6x10 Heigth 15 mm Inner and outer Threading in MM