3-hole Design - Can be used for larger and longer boards providing you flexibility outside the normal limits of most pocket hole jigs.Precise Guide Design - Allow you to make perfectly placed pocket holes without burrs.Adjustable Height - There are two clear scales engraved on the hardening dowel drill joinery kit: inches and millimeters, it will keep clear and won't be worn out like spray painting even if after long-term use . Adjustable drill hole jig pocket using a detachable slider design, it is more convenient to adjust the height according to the thickness of the board.Sturdy Toggle Clamp - Clamping thickness 12-42mm, Offer incredible rigidity and uncompromising workpiece hold-strength.High Duty Aluminum Body - Ensure a reliable woodworking support base.Wood-Chip Relief & Dust Collection - Designed to keep the drill bit clear of excess wood chips and allow you to complete a perfect pocket hole in just one plunge.Removable Drill Guide - Drill guide is removable for use with benchtop and portable bases.Wide Application - Suitable for the connection of various furniture components, it can be used for DIY, making new furniture, refurbishing or repairing old furniture.