This  Giant OCR is a great beginner's racing bicycle that has been modified into a commuter bike with a riser bar for added control and thicker tires for added comfort and extra grip. The bike has a sporty yet comfortable geometry that allows for relatively upright riding. 

The bike is equipped with Shimano Tiagra 9xx3 groupset with trigger shifters (gears next to the brake levers), dual-pivot brakes and a triple chainring to boost your hill-climbing capabilities. The hubs are silky smooth Tiagra hubs laced to and laced to Mavic CXP rims.

New Elvedes stainless steel brake and gear cables
New Schwalbe Delta Cruiser Green Guard 29-622 tires
New Elvedes brake blocks

50cm c-t sloping tube frame is suitable for people 160-172cm.