Packaging
Aside from the mouse, one finds a USB Type-A to Type-C cable, set of stickers, and quick start guide in the box.
Weight
My scale shows around 42 g (+/- 1 g), which is exactly in line with the weight cited by Redragon. This is a decent bit less than what the smaller and likewise hole-free Endgame Gear OP1 8K or similarly sized and also hole-free HyperX Pulsefire Haste 2 weigh, at 49 g and 53 g respectively. An excellent weight overall.
Cable
The K1NG 8K comes with a detachable, braided cable (USB Type-A to Type-C). In terms of flexibility, this one is supremely stiff, to where mouse movement will feel restricted even when used in a bungee. When looking for a replacement, sufficient shielding should be present to ensure signal integrity. Its measured length is 1.55 m, and a ferrite bead is attached.
Feet
The feet on the K1NG 8K are regular black-dyed PTFE (Teflon) feet. Glide is decent and thickness below average. The ring around the sensor ensures CPI stay consistent upon applying vertical pressure.