Warm Tips: These solid wheelbarrow tires are one of the most commonly used sizes on carts and trolleys. Please check carefully before ordering to make sure that the diameter, width, wheel length and bearing dimensions match those of your previously used tires,4.00-6 Wheel barrow Wheels And Tires : Tire Diameter: 13", Tire Size: 4.00"-6", Center Hub: 1.75"-5.75", Bearings: 5/8" (extra 3/4" attached for possible DIY replacement), Rim Diameter: 6”. Dynamic Load Capacity: 300LBS. Adapter kit includes 1 x 4.00-6 tire and wheel, 2 x 3/4" ball bearings, 2 x 1/2" long nylon spacers, 2 x 3/2" long nylon spacers, to accommodate various wheel sizes. Note: Not recommended for long-time high static load. AND NOT FOR HIGHWAY USE,Unique Tire Material: Our 4.00-6 tire and wheel is made of sturdy polyurethane construction for lower rolling resistance and higher weight capacity. And the internal blowout-proof design creates an airtight seal in the event of a flat tire, making it safer for the operator. The carbon black granular technology material used is more environmentally friendly than other materials and has no irritating odor,Upgraded One Piece Welded Rims: These wheelbarrow wheels are equipped with double sealed ball bearings to flexibly pivot and balance loads, allowing you to enjoy a balance of traction and maneuverability. Heavy-duty ball bearings and steel rims ensure good traction and vibration dampening during riding for more stability and comfort. The high-strength, single-piece welded rims ensure that they won't bend or separate from the hub when loaded with high-capacity cargo,Abrasion And Blowout Resistant: NISHCON 4.00-6 tire and wheel with high quality material and extra thickness prevents punctures or blowouts and is suitable for a wide range of road conditions such as sand, gravel, and rugged road surfaces. The wheelbarrow tires are designed with a straight tread making the tires have low rolling resistance, low noise, not easy to slip sideways, and have good maneuverability, allowing you to move effortlessly on gardening and general residential solo wheelbarrows,Wide Applicability: This tire and wheel assembly is the perfect replacement for a 4.00" x 6" tire-size solo wheelbarrow. Suitable for wheelbarrows, garden carts, lawn mowers, generators, unicycles, boat sliders, utility vehicles, scooters, hose reels, vans, dump trucks, and other equipment, perfect match for your model