Lewis LHP+ U4 Brake Set - Black 

Features
Material: 7075-T6 Aluminum
Pistons: 4 x 17mm
Mineral Oil
Three Adjustments for Lever Reach, Bite Point, & Leverage Ratio
Independent Cooling Fins Design for Improved High-Temperature Performance
Removable Olives Used in Anti-Oil Loss System Connector
Upgraded Leverage Ratio Adjustment Knob

Mfr Claimed Weight
Single Brake Weight: 260g (Without Oil Hose and Brake Pads)
Single Brake Lever: 98g
Single Caliper: 162g (Without Brake Pads)