We're in the Endgame now. 

The Endgame Gear OP1 is our wired gaming mouse with the smaller OP shape, PixArt PAW3395, our exclusive mechanical Kailh GX main button switches, angled stress relief, Flex Cord 5.0, 1000Hz polling rate and STM ARM Cortex-M4 MCU. With its Hybrid Skate Design, the OP1 comes with 2 sets of skates, while the smaller set is pre-installed and both small and large skate sets allow access to the screws to open the OP1 for main button switch changes without removal of the skates.