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100% new and quick jig points that self-centers within boards for quick, accurate positioning joints. state edge-to-edge, t, and edge to corner joint. made of plastics resistant to impact. can be used on cards up to 31mm thick. suitable for drilling wood. fits 6-8 and 10mm drills. specification: material: plastic + metals dimensions: 20x 7cm/7.87x2.76inch color: blue quantity: 1 pc note: 1. please 0-1cm error due to manual measurement. suddenly make sure you don't bid too