no dude, it's 1.5" inside diameter. technically, your grey stuff is 41m. but the outside is identical to what is sold as 1.5". both are measured from the inside. the outside on all of them is 1 7/8"/48m.
@Chuckles started
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no dude, it's 1.5" inside diameter. technically, your grey stuff is 41m. but the outside is identical to what is sold as 1.5". both are measured from the inside. the outside on all of them is 1 7/8"/48m.