Magliner GMK81UA4 Gemini Sr Convertible Hand Truck, Pneumatic Wheels, 500 lbs Load Capacity, 61" Height, 55-3/4" Length x 21" WidthThe Original convertible hand trucks allows driver to make 1 trip versus 5 trips.2 in 1 truck converts from 2 to 4 wheels in seconds. Saves the average delivery person 8 minutes per stop or 8 hours a week. High capacities reduce number of trips per day, increasing productivity. Strong, lightweight construction reduces user fatigue. Modular design means no welds to break, all parts are replaceable for longer product life. Lowers driver fatigue by reducing muscle strain. Optional accessories available to meet all delivery needs. Great for thousands of uses including arts and crafts industry, beverage delivery, corporate offices, food service, hospitals, malls, manufacturing, moving and storage, package delivery, amusement parks, trade shows, universities, vending, video production, medical delivery. 21" Overall width. 12" Frame width. 12" Deck width. 55-3/4" Overall length, 4 wheel. 61" Height, as hand truck. 45-1/8" Height, as platform truck. 51" Platform bed length. 500 lbs Capacity, as hand truck. 1000 lbs Capacity, as platform truck. 10-1/2" Platform height from floor. 10" Standard pneumatic Wheel with red bearing. 5" x 1-1/4" standard swivel Casters with red bearing. 18" x 7-1/2" Nose.Magliner 131020 5" x 1-1/4" Polyurethane Replacement Swivel Caster for Gemini Convertible Hand Trucks, 10" Length, 4" Height, 7" WidthMagliner 131020 5" x 1-1/4" Polyurethane Replacement Swivel Caster for Magline Gemini Convertible Hand Trucks. Stem measures 1" OD x 2.5" Length.