GIZA PRODUCTS Giza Products MS-308A Ahead Stem 70mm 84/96°31.8 BLK HBN12412 Stem Simple Aluminum Alloy Stem MS-308A Ahead Stem #6061-T6 Aluminum Alloy Forged Column Clamp Diameter 1.1 inches (28.6 mm), Stack Height 1.6 inches (40 mm) (84°/96°), 4.2 oz (125 g) (HBN12400)