Titan Adjustable Mobile Base Dolly 600 lb Capacity HD Universal Power Tools - Make Your Workshop Portable & Easy To Use Compatibility: Fits most equipment 600 lb or less and at least 19 x 20.5; Larger than 29.5 x 29.5 or 600 lb  1,200 lb, please check out our larger model mobile base Design: Stationary casters can be positioned forward- or backward-facing; Swiveling casters on opposite side; Equipment sits 1.5 above floor Versatility: Can be adjusted to eight different positions to fit different sized equipment Usage: Place heavy equipment inside to easily move around and pivot to different directions Dimensions: Internal width/length - Adjustable from 19 x 20.5 to 29.5 x 29.5; 3.6 tall; Caster spacing - 2.75 x 1.5