ATR Universal GY6 rear drum hub will allow you to attach most bolt pattern rims on the market! To make things simple, 3 out of 4 bolt pattern holes are drilled to M10 and tapped to 1.5mm thread pitch, allowing the end user to use typical socket head cap screws. Machined from T-6061 aluminum with a steel brake lining screwed in. The screwed in brake lining will insure that it's locked in place and will not come off! This is the only GY6 Drum hub on the market that has this feature! Ideal for 5", 6", 7", 8", and 10" wide rear rim! Bolt patterns: - 4x4 (4x101.6) ~ M12x1.25mm STUDS - 4x110mm ~ M10x1.5mm - Threaded holes - 4x115mm ~ M10x1.5mm - Threaded holes - 4x130mm ~ M10x1.5mm - Threaded holes ATR Universal GY6 rear drum hub is original drum hub created back in 2008!