Impeller Pullers allow easier removal of flexible impellers from pumps. Tighten the side grips onto the impeller hub and turn the center screw shaft to pull the impeller out of the pump. Constructed of corrosion resistant investment cast 316 stainless steel. 660020 for impellers 3-1/16" to 5" in diameter. 660040 for impellers 2-1/4" to 2-9/16" in diameter. Comparable to JabscoR #50070-0040 and #50070-0200.