ITEM NAME:Aluminum Alloy 17 Degree Drop Quill Stem 25.4mm/1" Handlebar Riser img *{margin:0;padding:0;.150mm quill length. 1 Piece Bike Quill Stem. Made of high-quality aluminum alloy which is strong, wear-resistant, long-lasting. Material: Aluminum Alloy. Degree: -17Â °C. Height: 150mm/5.90in. Color may be slightly different since different monitor.