Rockwell Tools via eBay offers the Rockwell Jawhorse Log Jaw and Chainsaw Vise Accessory, model no. RK9101, for $39.99 with free shipping. (Lowe's sells it for the same price.) That's the lowest total price we could find now by $8. It attaches to the Rockwell Jawhorse to hold logs and timber up to 12" in diameter and chainsaw blades when sharpening.