Channellock Up to 1-5/8 In. Ratcheting PVC Plastic Tubing Cutter. The Channellock Ratcheting PVC Plastic Tubing Cutter combines precision and ease of use for cutting plastic tubing with efficiency. Featuring a ratcheting mechanism and an auto-open feature, it allows for single-handed operation. The stainless steel blade delivers smooth, clean cuts, while the rubber-grip handles provide superior control and comfort during use.