Park Tool Professional Micro-Adjust Clamp Dialing in your bike can be a great and enjoyable pastime or a huge headache. Luckily, Park Tool is here to make the whole process a little easier. Upgrade your work stand with the Park Tool Professional Micro-Adjust Clamp. This all-inclusive setfeatures a cam-actuated adjustment system for quick mounting/dismounting, making it much more convenient to work on your bike. Features Cam-actuated adjustment system for quick entry, adjustment, and exit Narrow clamping jaws 2. 7" (7cm) designed to clamp securely yet fit into tight areas or on short seat posts Fully adjustable clamping pressure prevents damage to thin-walled tubes100-3Dfits:PRS-2, PRS-2OS, PRS-2. 2, PRS-2. 3, PRS-3, PRS-3OS, PRS-3. 2, PRS-3. 3, PRS-5 (manufactured before 6/96), PRS-4, PRS-4OS, PRS-4. 2, PRS-4W, PRS-12, PRS-33, and PRS-33. 2100-5Dfits: post-6/96 PRS-4, PRS-5, PRS-7 models with composite top tube100-25Dfits: PCS-10, PCS-11, PCS-12, PRS-15 (with #1951-15 Adaptor Stud), and PRS-25 | Park Tool | Professional Adjustable Clamp | Black | 100-3D, Fits Prs-2, 3, 4 And Prs-2