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 COLDSHIELD BWG-22 Gloves – Winter BOOGY BHE-37 Helmets – Youth ECOTANK BBC-01 Cages – Aluminium KITE BHE-29 HELMETS – ROAD