The Roberts 10-412-2 is a Deluxe Silver Knee Kicker. The Roberts Deluxe Adjustable Carpet Knee Kicker is the first modern knee kicker to be sold on the market. It features a foam-filled bumper pad and a checkered, non-slip hand grip for safe use. Quickly adjust the kicker length between 17" to 21" with a single button push. The die cast aluminum body is lightweight and durable for easy, reliable use. The 10-412-2 Deluxe Knee Kicker is Roberts' most popular knee kicker and has been the industry standard for over 40 years.