Robust and versatile jig with 2 easy-to-adjust sliding vee plates that lock into position for safe and effective drilling. Powerful 120mm suction cup holds the guide in place to reduce drill bit and holesaw movement. Minimum capacity 1mm, maximum 55mm. Robust and versatile jig with 2 easy-to-adjust sliding vee plates that lock into position for safe and effective drilling. Powerful 120mm suction cup holds the guide in place to reduce drill bit and holesaw movement. Minimum capacity 1mm, maximum 55mm.