General description High hardness, corrosion resistance, and long service life make this set of bike hydraulic disc brake oil needles and olives an excellent choice for bicycle maintenance. These accessories are designed for easy installation and are suitable for A-Majig systems. Technical specifications Item Name: Olive Head Color: Silver + Red Material: Metal Package Contents: 20 x Needles, 20 x Olive Heads, 2 x Wrenches Measurement allowed error: +/- 1-3 cm