Businesses in the trailer sales and parts category sell trailers for personal, commercial, agricultural and leisure use. Stock may include box trailers, flatbed and car transporters, plant trailers, catering trailers, horse trailers and small camping trailers. Some businesses sell new and used models, with options varying by size, load capacity, axle arrangement, braking system and intended use. Staff can usually explain features such as payload, coupling types and storage arrangements to help customers identify a suitable trailer. Parts departments supply replacement and maintenance items for trailers, including tyres and wheels, bearings, brakes, suspension components, couplings, jockey wheels, lighting, wiring, mudguards and security fittings. Businesses may also offer servicing, inspections, repairs, refurbishment or installation of accessories, either alongside sales or as separate services.