Introducing the Aluminum Bench Dogs (4 Pack) by POWERTEC. These round bench dog accessories are designed to provide you with a firm, anti-sliding, and secure hold for your stock onto your workbench - Allow optimal precision, leverage and bench top safety. Premium Design for Optimal Results: - Features a side spring mechanism that delivers easy dog sliding, along with a quick and snug installation into your bench for hassle-free utility. - Designed with a 2º negative slope that's perfectly paired with a crosshatched face, these hold down tools help maximize the hold down clamping action on your stock. - Their generous 4-3/8 in. L allows for the easy accommodation to a wide array of bench top thicknesses. - Light weight profile utilizing premium aluminum offers heavy-duty toughness and durability that will not corrode or ruin a cutting iron or plane when struck by accident. Project Versatility: Whether your working with a round, square, or irregular shaped workpiece, these bench dogs rotate to grip and secure your workpieces to suit your unique specifications. They can also be used along with bench vises to accommodate your needs. Easy to Use: Our bench dogs are precision machined, and fit perfectly into any drilled 3/4 inch bench dog hole to facilitate optimal use on a wide variety of workbenches and worktables.