Hope 31.8 seat clamp This Ad expired and is no longer available.See our other active classified ads. -/1 by timbur Published: 13th April 2019 (4 months ago) £1.00 Category Wanted Location United KingdomEnglandLewes Post? Will post in UKHi, Does anyone have a black 31.8mm Hope seatclamp? The allen bolt one, not the qr. Cheers TimTo contact this user, please register / loginLeave a Reply Cancel ReplyYou must be logged in to post a comment.