3-3/8" cups work great for mounting any of our popular 3-3/8" gauges to your bar or anywhere else you need a large visible gauge
CUP-3301 (pictured) - Chrome Gauge Cup uses brackets BKT-3378, BKT-3300, BKT-3325, or BKT-3350 to mount to the bar. CUP-3303 - Raw Steel Gauge Cup is intended for custom aplications and should be welded in place.