KINMAD 300 Pcs 4.4mm 0.17" Plastic Hole Plug Button Top Blanking Drilling Cover Caps Plugs for Chair Cabinet Cupboard Shelf, Black 300 Pieces Size:300 Pieces to test the solution of

to test the solution of acid and alkali

Voltage & Current : DC6V 1

Wide Application: ●Widely used in machinery equipment ●industrial production of shock absorption and insulation

avoid unnecessary errors

Auto power off after 5 minutes without operation

KINMAD 300 Pcs 4.4mm 0.17" Plastic Hole Plug Button Top Blanking Drilling Cover Caps Plugs for Chair Cabinet Cupboard Shelf, Black 300 Pieces Size:300 Pieces to test the solution ofKINMAD 300 Pcs 4. 4mm 0. 17" Plastic Hole Plug Button Top Blanking Drilling Cover Caps Plugs for Chair Cabinet Cupboard Shelf, Black 300 Pcs 4. 4mm 0. 17" Plastic Hole Plug Button Top Blanking Drilling Cover Caps Plugs for Chair Cabinet Cupboard Shelf, Black Specifications: Color: Black, Quantity: 300 Pcs Fit for 4. 4mm 0. 17" Shelf Hole 4. 4mm Caps: Easiest and cheapest way to hide unsightly shelf adjustment holes in kitchens, wardrobes, office &