Boker Manufaktur Solingen Carverâ€™s Congress Whittler. Pocket Knife, Red, Nail Nick, Slipjoint, Carbon Steel, Bone Type: Pocket Knife Blade Material: Carbon Steel Handle Material: Bone Opener: Nail Nick Opening: Manual Lock Type: Slipjoint Color: Red Blade Color: Uncoated Item Number: 115465SRB The Carver's Congress Whittler is designed by a carver, for carvers. It is a special blade configuration Congress knife for the carver in the family. With carbon steel sheepfoot, pen, coping and spey blades and red bone handle. Closed length: 3.75".