Pure, simple performance is what you can expect with the Elixir R. It features Taper Bore Technology, tool-free reach adjustment, Power Reserve Geometry, Tri-Align Caliper Positioning System, & drip-free bleeding just like every AVID hydraulic disc brake. Weight: 375g Tungstun Grey Aluminium, Aluminium Body Sintered, Top Loading pad Tool-Free Reach Adjustment, Adjustable Banjo, Tri-Align Caliper Positioning Ambidextrous GLOSSARY: Taper Bore Technology The term Taper Bore refers to a unique patent-pending closure system. It saves weight, looks super-sleek, improves lever feedback & most importantlygives you more power & control. Power Reserve Geometry Avid designed their levers with the pivot closer to the handlebar, in fact, closer than anyone else in the industry. The resulting lever movement has less inward travel, an arc that's closer to your fingers' natural motion & delivers more force to the brake. Tri-Align Caliper Positioning System With Avid's Tri-Align Caliper Positioning System, aligning the caliper to the rotor literally takes seconds. Just loosen the CPS bolts a little, & then squeeze the brake lever while re-tightening the bolts. Perfect caliper alignmentjust like that.