What you get: you will receive 1 piece of keyboard puller, 1 piece of door window track cleaning brush, 200 pieces of o-ring switch dampeners, plus a storage box; All these are enough for you to meet your daily needs Durable o-ring: made of silicone which ensures long service life of these o-ring switch dampeners, and they work well for quite up your keyboard as silicone material and elasticity; You even can type a bit faster for it shortens actuation distance 2-In-1 Keycap puller: made of quality steel, this key puller has a plastic handle with 2 steel loops to catch and pull keys, which can speed up the key removal Easy to store: the cleaner brush bristles are made of nylon, have strong flexibility, wear resistance, heat deflection can be easy to slide between keys; With hanging hole can hang up and occupy less space Easy to use: simply remove keyboard key, place o-ring onto stem of keycap, and then re-install key onto keyboard and press down firmly to fully set the rings