Metric Threading Taps M12 x 1.5mm Pitch Thread Plug Tap HSS Ti-coated Round Heating Wires such as the casing

such as the casing

Screw on type design for easy install and with surface nice finish for comfortable grip

(You may need drill press if the shelf is DIY)

Please clean glue remains before install the new edge

hex nut driver

Metric Threading Taps M12 x 1.5mm Pitch Thread Plug Tap HSS Ti-coated Round Heating Wires such as the casingSpecifications: Thread Size: M12 x 1. 5 Accuracy: H2 Shank Width: 7mm 0. 28 inch Thread Length: 30. 8mm 1. 21 inch Total Length: 88. 4mm 3. 48 inch Material: HSS (High Speed Steel) Finish: Titanium Coated Package Contents: 1 x Metric Machine Tap Descriptions: 1. Straight flute tap, clear threads without burrs, right hand tapping direction. Provides rapid downward chip removal to achieve efficient thread cutting, suitable for processing through holes