THESTRANGLER BSP-80 Generic clamps Category: Seatposts Tag: BBB Cycling Description Description For aluminum seatposts. 6061 T6 aluminum. Screw-on seatpost clamp. Diameters: 28.6, 31.8 and 34.9 mm. Related products DASHBOARD BCP-15W DashBoard POWERSAFE BBL-32 Locks – Medium security DASHBOARD BCP-06 DashBoard POWERSAFE BBL-31 Locks – Medium security