Toggle Bolts are made with a high quality AISI 316 type marine grade stainless steel and are specifically designed for use with corner discs, ezi-hold dee rings with pipe or fasten directly through a shade structure posts. Toggle Bolts can be fastened to most stainless steel fittings including wall plates, eye bolts or corner brackets. BRAND THREAD GRADE A H L PIN BREAKING STRAIN (KG) Econ M10 316 20 26 150 10 2500 Econ M12 316 20 26 150 20 3700 Econ M12 316 20 26 200 12 5900 Econ M16 316 16 42 150 16 6950 ProRig M12 316 16 17 221 12 5000 ProRig M16 316 16 22 222 16 8000 ProRig M20 Left Hand 316 22 31 115 19 10000 Measurements are in mm.