DMT Aligner Blade Guide. Black composition construction knife clamp fits virtually all blade thicknesses. Provides easy edge-guided knife sharpening. Scratch free. Can be used as a blade guide with DMT Diamond Whetstone, Dia-Sharp or any other bench stones. DMTABGWehave monthly sales. If you would like to be notified please sign up for our newsletter in our store: /Small-Lots-Florida Most of the items we sell are sold in quantities and are not unique. We use almost exclusively stock photos supplied by the manufacturer. Some of the items we sell are made from natural materials and will have some variation. Some of the items are handmade and will have differences. Some manufactures make slight design changes and don't notify us. We do not normally open and inspect items before shipment. Having said that, if you do not like the wood grain on a knife scale or for any other aesthetic reason the product you receive is unacceptable, please return it under our 30 day return policy. You may return a product for any reason as long as it is unused and all of the packing and inserts are returned. Items in clam shell or clear packaging must be returned unopened.