This product should be used with hand drill or wood trimmer (own motor). Easy to carry, easy to operate, improve work efficiency. The effect is beautiful, suitable for vehicle toolbox storage. Is a favorite professional locksmith tool. Quantity: 1 pc (only include one, please choose the appropriate size) Applicable: wooden door open slot, wooden door open hole. Product Specification: Materials: High Speed Steel Size: 16mm/16.5mm /18mm/20mm/22mm/24mm/25mm/26mm/28mm/30mm (Please choose the size you need) Total height: about 40mm Blade width size: about 16mm Thread size: about 10mm Applicable: wooden door open slot, wooden door open hole. Quantity: 1 pc (only include one, please choose the appropriate size) Features 1.This product should be used with hand drill or wood trimmer ( own engine). 2. Easy to carry, easy to operate, improve work efficiency. 3. The effect is beautiful, suitable for vehicle toolbox storage. Is a favorite professional locksmith tool. Note: 1.Please allow 1-3mm error due to manual measurement. Please make sure you don't mind before you bid. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks Package Included: 1pc x Carbide Wood Cutter