Hilman Rollers Bull Dolly Kits The Bull Dolly Series is the newest axle and wheel design from Hilman. Available in Nylon; Polyurethane and Steel wheels. Nylon and Polyurethane will not mar concrete; or most other; floors.    These dollies have individual capacities up to 6-ton and are prepackaged in kits with capacities up to 24-ton. Diamond Swivel Pad Dolly with Steel Wheels 3 Ton 4.79 x 5.23" x 8" 16 lbs. Includes: (4) BSD-3S Dollies; (2) Handles; (4) Pre-Load Pads *Product may vary slightly from image* " Hilman Rollers 12 Ton Bull Dolly Kit Swivel Pad Diamond Steel KBSD-12S