SurPro Interlok Magnesium Drywall Stilts 24-40 in. (SUR-SS-2440MP) Newest Model Quad Lock Technology: Double Wingbolt design for added security Wider and Lighter - construction offers lightweight, better balance, and improved mobility 3-position oversized heel bracket and foot plate with inter-looping straps provide better safety Interlok side pole bracket: A must have safety feature that locks pole securely to frame 1 Year Limited Warranty