ITEM NAME:Metal Stump Vise Chainsaw Sawing Sharpening Filing Tool Bar Clamp Professional Metal Stump Vise Chainsaw Sawing Chain Sharpening Filing Tool Bar Clamp Professional SPECIFICATIONS.(Item included: 1 x Stump Vise. Suitable for: Chainsaw. 2) For fixing into timber to hold the guide bar steady whilst filing the saw chain whilst on the saw. 3) This is a great portable tool used for sharpening in the field.