1. Material: iron 2. Purpose: the hook of the bicycle trailer connected to the rear axle of the bicycle 3. Application: suitable for most bicycle trailers 4. Features: sturdy and durable, not easy to rust, convenient connection, wide applicability 5. Bolt hole diameter: about 11 mm 6. Trailer handle rod hole diameter: about 7 mm 7. The diameter of the recessed area of the shaft nut: about 21 mm 8. Floor length: about 55 mm 9. Weight: about 159 grams
