The sram red e tap blip clamp 318mm pair use to keep blips in place on handlebars provides clean accessible and convenient blip mounting options for both drop bar and aero bar placement sram red e tap blip clamp 318mm pair features fits 318mm round portion of drop bar clamp mounts directly to bar outside of tape zone ideal for use with thumbs or index fingers while hands are on the tops right and left specific just like the blips material polypropylene weig