Crain 525 wide knee kicker has a wider gripping head with four gripper inserts and an extra row of hardened steel pins (19 total). It moves a wider section of the carpet with every kick. It also has our extra-thick bumper to absorb more impact. The telescoping steel tube construction is highly durable. The double buttons provide four length adjustments from 21" to 25". The visual pin depth dial provides nine different depth settings for various carpets. Power rods extending through the pin plate provide support and improved force transfer to the carpet. Crain wide knee kicker comes with a gripper cap. The bumper, nap grips, and pin plate are replaceable.