Same patented technology that has made the Master Plunger the world"s finest plunger, Made smaller to be price competitive with the most inexpensive rubber cup plunger but will still move 3 times more displacement than the standard rubber cup plunger, Holds a better seal that the rubber cup plunger, Life time guarantee, Black, Length: 5, Width: 12, 5, Height: 5 SKU: JNSN11979