Aijiren ergonomic manual vial crimpers and decappers remove the pain and discomfort of wrist strain with a lightweight, tailored design. Weighing 25–30% less than predecessors, the new design dramatically improves your experience by helping to eliminate sore, pinched hands. Extensively tested on both 11 mm crimp caps and 20 mm crimp caps, these vial crimpers are an economical alternative to electronic vial versions.