Gripple® Twist Anchor Installation Chucks feature a heavy-duty steel construction. They fit any standard electric drill. Choose your desired length below. Gripple® designs these chucks for installing their High-Load Twist Anchor Pins. These chucks automatically disengage when the anchor reaches full depth. This innovative design prevents potential damage to the fabric or mat. Gripple® anchors are far superior to standard straight staples or pins. These installation chucks make them much less labor intensive. Installation is ten times faster than hammering straight staples and pins! Click HERE for our complete selection of Gripple® products. Click HERE for our complete selection of Gripple® products.