Can apply on bushings, ports, tubs,

holes, channels, socket brake guides

Brush material & size: 6pcs each

Steel- 9-11-13-15-17-19mm

Brass-9-11-13-15-17-19mm

Nylon - 9-11-13-15-17-19mm

Each brush is 1/4" HEX driver shank.

2pc- quick release screwdriver with handle