The standard hand chuck contains a cannulated extension to secure the hand when putting long pins, and will grip pins between 0 and 1/4 "(6.3 mm). It also includes a stainless key. However, many mini pin hand chucks might also come without any key. Since GerVetUSA has promised our customers to manufacture only quality instruments, we have used the best material in the production of these tools. GerVetUSA has experienced and competitive technician team, which helps us to maintain the quality after undergoing all the possible quality checks. If you want to buy surgical instruments for animal health care, please visit our website for further details. Feel free to contact us for any query. Our market competitive range of various instruments attract our worldwide clients and practitioners. Our customer care team will be available to serve you 24/7. Your satisfaction is a priority for us.