This product is either discontinued or we cannot get that from suppliers.
STM -222-163L-01 Dux Shell Ipad Pro, Tablet Case, Polycarbonate, Screen Size 12.9" / 32.8 cm, Slim, lightweight construction, Easy installation, TPU and polycarbonate bracket for protection, Works with the Apple Smart Cover and Smart Keyboard.
The STM STM-222-163L-01 Dux Shell Case in black is designed for the 2015 and 2017 models of the Apple 12.9" iPad Pro. Made of polycarbonate and TPU, this case meets U.S. MIL-SPEC-810G drop test standards.