Mast Step is manufactured from a special combination of Nylon/Glass fibre which together with it's design gives the step a safe working load of 140kg (310lbs). There should be two opposite one another approximately 1200mm from the mast top. The optimum distance between the steps is 375mm. To calculate the the approximate number of steps required, take the length of mast in metres and multiply by 2.5 Key Features Glass Nylon injection moulding. Lightweight and UV resistant. Aerodynamic and snag free profile. No rattling in wind at anchor or mooring. Each step individually tested at factory. Available in White, Black and Grey. Weight 165 grams Corrosion Free No Electrolysis Folds Flat Screw/Rivet Size 5mm SWL 140kg Although the steps provide a secure foothold, it is strongly recommended to use a harness with a saftey line attached when climbing a mast. Models Mast Step Grey Mast Step White Mast Step Black