4-pack Square Hole Mortise Hole Saw Drill Bit Set Diy Woodworking Drill Bit Set Detailed description: Specification:Product name: Sleep

Detailed description: Specification:Product name: Sleep MaskMaterial: eco-friendly polyester

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elastic and washable for long-term use

4-pack Square Hole Mortise Hole Saw Drill Bit Set Diy Woodworking Drill Bit Set Detailed description: Specification:Product name: Sleep4 pack Square Hole Mortise Hole Saw Drill Bit Set Diy Woodworking Drill Bit Set 4 different sizes: 6. 4mm, 8mm, 9. 5mm, 12. 7mm. Made of high speed steel, high hardness, durable and practical, heat treatment, long service life. Square hole drill bit cannot be used on electric drill, square hole drilling need to fit square hole drill bit (tenon and mortise machine) to use. Fits all mortising machines and drill attachments. The square hole drill bit is