Boker 090501 Leather Strop. The Boker Streich-Riemen leather razor strop is high quality strop for sharpening and honing made of very dense yet flexible smooth Russian leather. A slate plate is mounted on the back for the flawless resharpening of any straight razor. Two long cavities below the leather provide the necessary flexibility for an effective and gentle honing of the thin razors. Also features a flexible wooden base. Dimensions (leather strop/slate): 1.625" x 15.75" x 1.25". Total length: 12.5". Includes a traditional slipcase. Made in Solingen Germany.