Aluminum Circle, 12.7mm (.50"), 18 gauge Diameter: 12.7mm (.50") Thickness: 18 gauge Sold in pack of 5. One side has a peelable plastic film to protect it from scratching.
Aluminum Circle, 12.7mm (.50), 18 gauge
Can a graphene body armor withstand against a .50 caliber bullet? - Quora
Supermarine Spitfire - Wikipedia
Aluminum Four Sided Rectangle Bar, 38.1mm (1.5) x 6.4mm (.25), with – Beaducation
Aluminum Rounded Rectangle, 45mm (1.77) x 10mm (.39), 18 Gauge, Pack – Beaducation
Aluminum Rectangle, 31.8mm (1.25) x 6.4mm (.25), 18 Gauge, Pack of 5 – Beaducation
Aluminum Strip or Bookmark Blank, 152mm (6) x 25.4mm (1), 20 Gauge – Beaducation
Aluminum Round, Disc, Circle, 48.5mm (1.91), 18 Gauge – Beaducation
All products – Page 3 – Beaducation
What exactly does the -# mean in bullet calibers such as .45-70, .30-06, and .22-250? - Quora