The HK Surgical Aspirator has excellent high-speed powerful suction. It can hold up to four Baxter Canisters or two AbbottTM / SorensonTM Canisters. This keeps the user from having to change out canisters. The HK Surgical Aspirator is made for strong performance without creating a lot of noise. The device comes with the following: 1 liner, 1 canister, 2 foot pedals, 2 brackets, 2 derlin rings, 1 canister bracket spacer 1 canister rod, 1 user manual, 1 filter, and 1 piece of aspiration tubing.