Product packaging: Each set is packaged in neutral white box or color box. Product weight: 288 grams (including white box), 460 grams (including color box). Package size: white box 21 * 7.5 * 8.5cm, color box 22 * 12 * 8.5cm Product function: Used in woodworking DIY to limit the drill bit, control the drilling depth, improve drilling accuracy, and achieve multiple direction drilling limit. Product configuration: White box only contains woodworking limit clip plastic parts. The color box contains wooden limit clamp plastic parts, 10 wooden dowels of 6mm-8mm-10mm each, one 6-8-10mm positioning ring each, one 6-8-10mm three-point woodworking drill each, and one hexagonal small wrench, totaling 38 pcs. Hole drilling specification: Suitable drill specification: 3/3.3/4/4.2/5/6/6.8/8/10/12mm. Specifications: Easier, straighter, and more accurate drilling into wood materials. Drilling and Dowelling Guide with parallel fence and drill guide. Ideal for corner, angle, tee, and butt joints. Rubber slip protection for use on smooth and awkward surfaces. Suitable for use with standard dowel sizes: 6, 8, and 10 mm. The Dowel Drill Guide can also be used as a drilling guide for accurate 90 drilling with drill 3-12mm. Made of hard plastics are used to establish precise fit connections in glue-laminated wood, solid wood, particleboard, etc. That allows you to produce E, L, or T joints or pin-reinforced miter joints. Package Included: 1 * Woodworking positioning and drilling tool set