This support brace is specifically designed for the Work Sharp Precision knife sharpener, the adjustable height system ensures a safer sharpening process, reducing the risks of accidental slips and mishandling. This support is designed to stiffen the clamp arm. Easy to place and remove, simply insert the arm between the vice clamp and the tightening wheel. The brace is adjustable to increase or decrease the amount of pressure pushing back against the arm. A simple 2 second operation and all your angles will come out looking cleaner and better than ever. This is also a great upgrade to your WPA if you're looking to upgrade to a KME or Wicked Edge. Guarantee:If there is any dissatisfaction,Please contact us,We will moneyback immediately.We do our best to solve the after-sales problems for you, we are willing to take all quality-related refunds and reshipments for you. Simply insert the arm between the vice clamp and the tightening wheel. Then twist the bottom of the brace to raise the head until pressure is applied to the vice. A simple 2 second operation and all your angles will come out looking cleaner and better than ever.