Qep Tile Tools 10-412 Deluxe Knee Kicker Q.E.P. Co., Inc. has been a driving force in the continued growth and modernization of specialty tools, especially those found in the flooring installation markets, since 1979. Qep Tile Tools 10-412 Deluxe Knee Kicker Features: The most popular knee kicker and has been the industry standard for over 25 years Trigger assembly easily adjusts the length from 17" to 21" Superior die cast aluminum body is lightweight and durable Foam-filled seamless bumper pad for extra comfort