The Echo Base fly reel is a durable, entry-level fly reel designed for dependable performance on the water. It is available in three sizes to match common freshwater fly-fishing setups.

• 2/3: 4.3 oz, 2.6" diameter, 0.6" width, 75 yd / 20 lb backing capacity
• 4/5: 4.7 oz, 3.2" diameter, 0.9" width, 100 yd / 20 lb backing capacity
• 6/8: 5.2 oz, 3.4" diameter, 1.0" width, 150 yd / 20 lb backing capacity

Source: Echo Fly Fishing product page: https://echoflyfishing.com/project/base-2/