7075T6 to be exact. The safest, yet lightest straight gauge aluminum alloy tubing on the planet goes into crafting Stella Azzurra Profi professional grade road bars. 7075T6 is the finest material around for the perfect strength to weight ratio in alloy road race bars. Profi bars have seen action in the 2001 pro peloton from the Manayunk Wall in Philly to the Giro d'Abruzzo in Italy. Cut shallow with a sleek ergonomic shape, Profi pro bars are sandblasted and anodized to a sensuous finish that belies their inner strength. SPECS: Blk. 40, 42, 44, 46 cm. outside to outside. 26 and 31.8mm. 26RD88155 CC. 235g. 31.8RD90142 CC. 230g.