Perfect miters - no adjustments! Simply cut one piece on the leading face, one on the trailing face, and voil! Since both pieces reference off a perfect 90 angle, the miters will fit perfectly. Pre-installed adjustable nylon pins provide a no-slop fit to the miter track. Through-slots in the base allow you to securely clamp moldings at table level. Can be easily drilled to add extended fences and stops. High-impact polycarbonate ensures durability and low-friction sliding. Fits a standard 3/8" x 3/4" miter slot. Measures 5-1/2" in width and 10-3/8" in length. Clamping faces are 7-1/2" long.