The setting tool is designed to make easy work of expanding the hollow wall plugs once they are in place.Metal with non-slip rubber grips and slip guard.For setting cavity wall fixings into hollow stud walls accurately and quickly.Place Anchor into pre-drilled hole, attach setting tool and squeeze trigger .Well built, simple to use, perfect installation every timeNotes: Transition: 1cm=10mm=0.39inch 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3cm measuring deviation due to manual measurement.Serve:If you have any uncertainty in the purchase process, you can contact us at any time, except holidays, we will reply you within 24 hours. After successful purchase, if there is any problem with the product, please contact us, we will solve your problem 100% sincerely.