Salsa Flip-Lock Seat Clamp 30.6mm Black ST8517 Salsa Flip-Lock Seat Clamp 30.6mm Black ST8517 Machined 6061 Aluminium seatpost clamp with integrated Flip-Off lever, stainless steel pivot. Laser-etched Salsa logo 30.6 clamp for most Salsa Scandium frames, 30.0 clamp for most Salsa steel frames