The BB5 offers our Tri-Align Caliper Positioning System, tool-free pad replacement, a melt-forged body and an inboard pad adjustment knob.Weight: 335 grams (160mm rotor; front post mount)Inboard Knob Pad Adjustment, Tri-Align Caliper PositioningSintered padGLOSSARY:Tri-Align Caliper Positioning SystemWith Avids Tri-AlignCaliper Positioning System, aligning the caliper to the rotor literally takes seconds. Just loosen the CPS bolts a little, and then squeeze the brake lever while re-tightening the bolts. Perfect caliper alignmentjust like that.