Ebike Drivetrain ToolAllows drivetrain cleaning, maintenance and lubing to be completed easilyPrecision machined, 6061 aluminum body with a screw capInner polypropylene tool bit holder contains: 5 mm, 6 mm hex & T30 Torx bitsRubber O-ring reduces water ingress into tool bitsSilicone sleeve protects bicycle crank when backpedalingCorrosion-resistant neodymium magnet snaps tool bits into placeHandy size can be taken with you anywhere, 69 x 23 x 23 mm (excluding lanyard)