DROK 5PCS Aluminum GT2 Timing Belt Pulley 16 Teeth Bore 5mm Width 6mm and Wrench for RepRap 3D Printer Prusa i3 Description Description: This is synchronous aluminum belt pulley for 3D printer. This pulley is for 6mm width GT2 timing belt and 5mm shaft stepper motor. There are two screws for each set of pulley (the screws are included in the package). Pulley Specifications: Tooth: 16T Bore: 5mm Belt Width: 6mm Material: aluminum Package Includes: 5 x GT2 Timing Belt Pulley 1 x Allen Key Features: 16T 5mm bore Aluminum GT2 Timing Belt Pulley. Applies to 6mm width belt; An Allen Key is included. Two screws are provided for each synchronous pulley and already have been screwed in the pulley. Adopt high quality aluminum, excellently machined, finished smoothly. Perfect choice for building a 3D printer or similar projects. Product Details: Is Discontinued By Manufacturer ‏ : ‎ No Package Dimensions ‏ : ‎ 5.39 x 3.23 x 2.99 inches; 1.28 Ounces Item model number ‏ : ‎ 300362 Date First Available ‏ : ‎ December 17, 2015 Manufacturer ‏ : ‎ DROK Country of Origin ‏ : ‎ China Best Sellers Rank: #317,662 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #3,841 in 3D Printer Accessories #3,841 in 3D Printer Accessories Customer Reviews: 4.3 4.3 out of 5 stars 85 ratings