Duracable wide v-bottom blades are made to work best with 5/8" to 3/4" sewer cable and with the DM30 sled machine and DM162 upright machine, though they also are compatible with other companies' machines. They can be used to clean sewer pipes up to 6" in diameter. The v-bottom blades are also referred to as cone chuck mounting blades, which means they are designed to be used with a cone chuck (you can purchase a cone chuck here). By placing 2-3 blades in a cone chuck, you can get maximum cleaning of a drain line.
These blades range in length from 4" to 6" and all have a thickness of .062 inches and a width of 1.00 inches.