The 6100 series of stepladders have a duty rating of 300 pounds and feature oversized, molded Proguard Boots for firm slip-resistant footing. These boots also protect the fiberglass rail. The HolsterTop has the Lock-In System to keep your tools secure and right at your fingertips. The slip-resistant, TRACTION-TRED® steps are double riveted and the rear section has a full set of horizontals. Back-up plates reinforce all top connectors and the internal spreaders are heavy duty. Fiberglass rails are non-conductive for working near electricity.