Narex 12 Piece Chisel Set Containing 3 mm (1/8") 4 mm (3/16"), 6 mm (1/4"), 8 mm (5/16"), 10 mm (3/8") 12 mm (1/2"), 16 mm (5/8"), 20 mm (11/16"), 26 mm (1 1/16"), 32 mm (1 1/4"), 40 mm (1 5/8") and - - Amazon.com
Toujours wedding band, 4 mm 18K yellow gold - Van Cleef & Arpels
4 mm-diameter steel cable (Ø 4 mm)
Amazon.com : Corrugated Plastic Sheet for Indoor and Outdoor Use - 4 Mm Thick Poster Board, 24x36 Inches - Pack of 2 White Plastic Board Sheets - Waterproof Coroplast Sheets and Lightweight