The device is intended to endoscopically transect polyps in the gastrointestinal tract (sessile or pedunculated) using electrocautery. During the same maneuver the polyp is captured, retrieved and submitted for pathological analysis. The Tandem Snare is an intervention tool inserted through the colonoscope for the resection and removal of polyps sized 6 to 25 mm. The Tandem snare utilizes a technology that has the potential to hold the polyp, lift it up, resect and remove it without losing it. This is a feasibility study aiming to demonstrate the safety of the Tandem Snare used for 6-25mm polyps' polypectomy in screening, diagnostic or surveillance colonoscopy.