Type 316 stainless steel contains 2-3% molybdenum which increases corrosion resistance, improves resistance to pitting in chloride ion solutions and increases strength at high temperatures. Type 316 grade stainless steel is particularly effective in acidic environments. It is effective in protecting against corrosion caused by sulfuric, hydrochloric, acetic, formic, and tartaric acids, as well as acid sulfates and alkaline chlorides. Great for use in marine environments. Outer Diameter: Flat 30mm, inner diameter: 25mm. Thickness: 2.75mm. Weight: ~4.1 g/piece A perfect solution for attaching gears onto your BCD Package includes: 10x Flat 30mm 316 Stainless Steel Key Ring Split Ring6 sizes are available: (1)Round 20mm-Outer Diameter: 20mm, inner diameter: ~16.4mm. Thickness: ~2.4mm. Weight: ~1.4 g/piece. (2)Round 25mm-Outer Diameter: 25mm, inner diameter: ~21mm. Thickness: ~2.8mm. Weight: ~2.2 g/piece. (3)Round 30mm-Outer Diameter: 30mm, inner diameter: ~24.7mm. Thickness: ~3.3mm. Weight: ~4.1 g/piece. (4)Flat 30mm-Outer Diameter: 30mm, inner diameter: ~25mm. Thickness: ~2.75mm. Weight: ~4.1 g/piece. (5)Flat 25mm/20.5mm-Outer Diameter: 25mm (Flat), inner diameter: ~20.5mm. Thickness: ~2.4mm. Weight: ~2.8 g/piece. (6)Flat 25mm/21mm-Outer Diameter: 25mm, inner diameter: ~21mm. Thickness: ~2.2mm. Weight: ~2.2 g/piece.
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