EASY TO USE: The bike trailer hitch is easy to install without other tools required. Angled connector for bicycle is ideal for easily and quickly attaching your trailer to your bike. DURABLE MATERIAL: The bike trailer hitch coupler attachment made of steel with black enamel coating, strong and durable, corrosion resistant, hard to damage. STABLE: Each bike trailer coupler has equipped with a connect pin, the pins can hardly get opened, also once you install them up, they will not easily fall off. COME WITH SNOWFLAKE TOOL: This multi instrument snowflake tool can be used to open beer bottles, rotate various screws, fix skis and bicycles, open cartons, etc. You can use it in travels, outdoor adventures, sports, camping, boarding, exploration andrescues, etc. UNIVERSAL DESIGN: The bike trailer attachment fits most bike. Before your purchase, please notice the size of the shaft diameter is 0.55in, please check your trailer whether fits it. Bike Trailer Coupler, 2 Pack Bicycle Trailer Hitch Connector Replacement Steel Trailer for Child, Pet, Cargo Bike Trailers with Snowflake Multi Tool 18-in-1 Specification: Color: Black Material: Steel Weight: 370g Size: As the picture shown Features: EASY INSTALLATION: This practical bike trailer hitch are designed for towing solutions. With the complete hitch arm and hitch connector, it is more easy to install without other tools required. BRING CONVENIENCE: The bike trailer hitch connector be applied to universal bicycles, stroller and so on, suitable for daily use and family tour use. FAMILY FUN: With an additional trailer coupler attachment, both Mom and Dad's bikes can be outfitted to tow the kids trailer, your kids will enjoy the bike ride. Notes: We do not guarantee that this attachment is suitable for all trailers and bicycles. Please refer to your Trailer model and installation hole size before ordering. Package included: 2 Set of Bicycle Trailer Coupler 1 Pack snowflake tool