Kreg Micro-Pocket Drill Guide Kit 530 is designed to create pocket holes that are 25% smaller, measuring just 15/16" long, making it i for smaller projects, thinner stock, and tighter repairs. These Micro-Pocket holes are for use in virtually every situation where standard pocket holes are used, especially with 1/2" (12mm) thick material and narrow stock as slim as 1" (25mm) wide. Because the drill bit removes less material, drilling is faster and requires less effort. Simply insert the Micro-Pocket Drill Guide block into your Pocket-Hole Jig 520PRO and use the Micro-Pocket drill bit to create compact, precise pocket holes. This kit is designed for use with 500-Series Pocket-Hole Jigs and is compatible with Kreg® pan-head pocket-hole screws. Model Number: 530