A practical choice for home mechanics and workshop users who need a dedicated tool for standard slotted chainring nuts.
The PRO Chainring Bolt Spanner is designed to hold a slotted chainring nut steady while you tighten or loosen the matching chainring bolt. That makes chainring removal, replacement and adjustment more controlled than trying to grip the nut with an improvised tool.
Built from steel with a long shaft, it provides extra leverage to help reduce the force required at the nut. The integrated 9 mm and 10 mm wrench sockets cover the two fastener sizes specified for this tool, so you can switch between them without reaching for a separate spanner.
If you handle your own drivetrain maintenance, this is a compact, dedicated addition to your workshop kit. Check that your chainring uses standard slotted chainring nuts before ordering; the tool is intended specifically for that style of fastener.
Holds the nut steady
Keeps standard slotted chainring nuts from turning while you tighten or loosen the chainring bolt.
Two integrated sockets
The built-in 9 mm and 10 mm sockets cover the specified fastener sizes in one tool.
Long-shaft leverage
The extended shaft helps reduce the effort needed to work the nut.
Steel construction
A steel build provides a solid tool for regular chainring maintenance.
Dedicated chainring tool
Designed specifically for chainring nuts and bolts, making it a more suitable choice than a general-purpose wrench.
Straightforward compatibility
Suitable for chainrings using standard slotted chainring nuts.
General
Materials & construction
Compatibility
Sizing
Features
Pro is a cycling component and accessory brand focused on contact points, tools and finishing kit for road, gravel, mountain bike and triathlon riders. Its range covers handlebars, stems, saddles, seatposts, bar tape, workshop tools and on-bike accessories, with product development centred on fit, function and rider feedback.
The brand is closely linked with high-performance cycling and develops products through collaboration with riders, designers and Shimano Dynamics Lab. Pro supports elite athletes across multiple disciplines, but its catalogue is aimed broadly at riders who want practical, performance-led equipment for everyday riding and racing.
