This listing is for one 6" I Block type flat band exhaust clamp, made from stainless steel. This is a replacement for Torca Easy Seal style flat band clamps. Made in the USA. These are for use for lap joint connections, where an ID end (expanded and slotted) slips over an OD end (plain non-expanded end). It's not for use for butt joints where two OD ends butt up against each other. You need a butt joint clamp for that.