XS Scuba Tank Cam Strap with Stainless Steel BuckleThe XS Scuba cam strap with separating stainless steel buckle is the easiest, most secure way to attach your cylinder to your BC. Standard length, as found on SeaBlazer, fits most BCs that have standard backpacks Shorter length, as found on Phantom, fits most BCs without hard packs Both versions fit 6. 9 in (175 mm), 7. 25 in (184 mm) & 8. 0 in (203 mm) diameter cylinders Cam buckle made of marine grade 304 stainless steel The buckle separates for