Hex Tool

The Park Tool Hex Tool is a hex (Allen) wrench intended for turning hex bolts and fasteners commonly found on bicycles and bike components; check the product listing for the specific model name and size range included.

Use it for tightening and loosening hex bolts on components such as brake and derailleur mounts, stems, seatposts, and accessory hardware—confirm the tool's listed sizes match the fasteners on your bike.

The product’s model name and specifications on the listing will show the included hex sizes; if the model isn’t shown, provide the exact model number to verify the size set.

Keep the tool clean and dry, wipe off grease or dirt after use, and store it in a toolbox or pouch to reduce corrosion and prevent misplacement; refer to the product listing for any manufacturer care guidelines.