MADE IN THE USA. Wicked Edge has produced the highest quality precision knife sharpening systems since 2007. LIMITED LIFETIME WARRANTY. We are proud of our sharpening systems and we stand behind our products. INCLUDES: - Coarse 100 Grit / Medium Coarse 200 Grit Diamond Stones Pack. - Medium Fine 400 Grit / Fine 600 Grit Diamond Stones Pack. - Extra Fine 800 Grit / Ultra Fine 1000 Grit Diamond Stones Pack. FASTEST AND EASIEST TO USE of any Wicked Edge sharpener. Rapid Angle Adjustment Mechanism - angle is changed on both sides of the sharpener simultaneously with the pull of a lever. DualCam Vise - one-step knife clamping requires no additional tools to operate. SHARPENS BLADES UP TO 15" LONG. Angle Range: 12 to 28 Degrees (24 to 56 degrees inclusive). Main angle adjustment in 0.50 degree increments. The optional micro-angle adjustment offers 0.05 degree increments and increases the angle range from 12 to 33 Degrees. Designed from the ground up for the fastest, easiest sharpening experience possible, the Generation 4 Pro is for the true knife enthusiast. If you're serious about knives, this is the sharpener for you. Featuring: - Incredibly smooth, dual-sided angle settings allow you to set both sides to the same angle, saving you time while creating perfectly symmetrical bevels. - Self-tensioning, DualCam Vise provides the strongest, most secure clamping experience on the market. - Customizable features allow you the freedom to build the sharpener that fits your needs. - Patented dual-sided sharpening technology means 4x faster sharpening and the most durable edges you can get. - Designed, manufactured, and assembled in the USA. Includes: 100/200 Grit Diamond Stones Pack (2 ea) 400/600 Grit Diamond Stones Pack (2 ea) 800/1000 Grit Diamond Stones Pack (2 ea) 8" Guide Rods Depth Key Advanced Alignment Guide Shims Pack Practice Knife Optional Micro-Adjusts Optional Cabinet Specs: Can sharpen blades up to 15" long (longer knives can be sharpened with longer Guide Rods) Angle Range without Micro-Adjusts: 12 - 28 degrees per side (24 - 56 degrees inclusive) Angle Range with Micro-Adjusts: 12 - 33 degrees per side (24 - 66 degrees inclusive) Angle adjustment in 0.05-degree increments Angle markings are calibrated for the knife's edge to sit 5/8" above the top of the vise Able to clamp blades up to 3/16" thick Guide Rod length: 8"