Features Precision Hole Driller: Accurately drills holes up to 0.25mm, providing a precise solution for locating drill holes. High-quality Material: Made from durable aluminum and stainless steel, ideal for woodwork. Round Tenon Connection: Facilitates punching precise holes and connecting panels with round tenons. Micro-adjustment Function: Features a micro-adjustment knob for precise panel thickness measurements up to 0.25mm. Two in One Woodworking Tool: Functions as both a hole opener and an accurate hole positioning device for DIY projects. Specifications Material: Aluminum and Stainless Steel Color: Black Main Rod Length: 233mm Limit Ring Size: 6mm, 8mm, 10mm Stainless Steel Locator Rod Size: 10mm Optional Type: A(No Clip) / B(With C Clip) Package Included Type A 1 x Main Body 1 x Extension Rod (233mm) 3 x Limit Rings (6mm, 8mm, 10mm) 2 x Stainless Steel Locating Rods (8mm, 10mm) 1 x Inner Hex Wrench (3mm) 3 x Triangle Drill Bits (6mm, 8mm, 10mm) 1 x Drill Sleeve (6mm, 8mm, 10mm) 1 x Stainless Steel Locating Rod (10mm to 6mm Adapter) Type B 1 x Main Body 1 x C Clip 1 x Extension Rod (233mm) 3 x Limit Rings (6mm, 8mm, 10mm) 2 x Stainless Steel Locating Rods (8mm, 10mm) 1 x Inner Hex Wrench (3mm) 3 x Triangle Drill Bits (6mm, 8mm, 10mm) 1 x Drill Sleeve (6mm, 8mm, 10mm) 1 x Stainless Steel Locating Rod (10mm to 6mm Adapter)